Hello community, here is the log from the commit of package libXfont.3647 for openSUSE:13.1:Update checked in at 2015-03-27 09:56:13 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Comparing /work/SRC/openSUSE:13.1:Update/libXfont.3647 (Old) and /work/SRC/openSUSE:13.1:Update/.libXfont.3647.new (New) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Package is "libXfont.3647" Changes: -------- New Changes file: --- /dev/null 2015-03-12 01:14:30.992027505 +0100 +++ /work/SRC/openSUSE:13.1:Update/.libXfont.3647.new/libXfont.changes 2015-03-27 09:56:14.000000000 +0100 @@ -0,0 +1,74 @@ +------------------------------------------------------------------- +Mon Mar 16 05:36:09 UTC 2015 - [email protected] + +- u_libxfont_bdfreadproperties_property_count_needs_range_check.patch + u_libxfont_bdfreadcharacters_bailout_if_a_char_s_bitmap_cannot_be_read.patch + u_libxfont_bdfreadcharacters_ensure_metrics_fit_into_xcharinfo_struct.patch + * Security fixes. (bnc#921978, CVE-2015-1802, CVE-2015-1803, CVE-2015-1804) + +------------------------------------------------------------------- +Fri May 9 14:00:27 UTC 2014 - [email protected] + +- U_0001-CVE-2014-0209-integer-overflow-of-realloc-size-in-Fo.patch, + U_0002-CVE-2014-0209-integer-overflow-of-realloc-size-in-le.patch, + U_0003-CVE-2014-0210-unvalidated-length-in-_fs_recv_conn_se.patch, + U_0004-CVE-2014-0210-unvalidated-lengths-when-reading-repli.patch, + U_0005-CVE-2014-0211-Integer-overflow-in-fs_get_reply-_fs_s.patch, + U_0006-CVE-2014-0210-unvalidated-length-fields-in-fs_read_q.patch, + U_0007-CVE-2014-0211-integer-overflow-in-fs_read_extent_inf.patch, + U_0008-CVE-2014-0211-integer-overflow-in-fs_alloc_glyphs.patch, + U_0009-CVE-2014-0210-unvalidated-length-fields-in-fs_read_e.patch, + U_0010-CVE-2014-0210-unvalidated-length-fields-in-fs_read_g.patch, + U_0011-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch, + U_0012-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch + * Security fixes. (CVE-2014-0209, CVE-2014-0210, CVE-2014-0211, + bnc#857544) + +------------------------------------------------------------------- +Wed Jan 8 11:55:01 UTC 2014 - [email protected] + +- U_CVE-2013-6462-unlimited-sscanf-overflows-stack-buffe.patch + * unlimited sscanf overflows stack buffer in bdfReadCharacters() + (CVE-2013-6462, bnc#854915) + +------------------------------------------------------------------- +Sat Aug 17 22:04:16 UTC 2013 - [email protected] + +- Update to version 1.4.6: + + Require ANSI C89 pre-processor, drop pre-C89 token pasting + support. + + Protect config.h inclusion with ifdef HAVE_CONFIG_H, like + usual. + + Replace deprecated Automake INCLUDES variable with AM_CPPFLAGS. + + autogen.sh: Implement GNOME Build API. + + configure: Remove AM_MAINTAINER_MODE. + + catalogue: Fix obvious thinko. + + Omit catalogue support on systems without symlinks. + + If socket is interrupted with signal EINTR, re-attempt read. + +------------------------------------------------------------------- +Sun Feb 17 17:21:53 UTC 2013 - [email protected] + +- Use more robust make install call + +------------------------------------------------------------------- +Thu Apr 12 06:24:00 UTC 2012 - [email protected] + +- Update to version 1.4.5: + + Updates to better handle fonts compressed with compress(1) + + Do proper input validation to fix for CVE-2011-2895 + + Fix crash if pcf header is corrupted + + Cleanups for compiler warnings + + Improvements for the developer documentation + + Build configuration improvements +- Changes from version 1.4.4: + + LZW decompress: fix for CVE-2011-2895 + + Fix memory leak + + Build configuration improvements +- Drop U_libXfont_LZW-decompress-fix-for-CVE-2011-2895.patch: fixed + upstream. + +------------------------------------------------------------------- +Tue Feb 7 22:17:49 UTC 2012 - [email protected] + +- Split xorg-x11-libs into separate packages New: ---- U_0001-CVE-2014-0209-integer-overflow-of-realloc-size-in-Fo.patch U_0002-CVE-2014-0209-integer-overflow-of-realloc-size-in-le.patch U_0003-CVE-2014-0210-unvalidated-length-in-_fs_recv_conn_se.patch U_0004-CVE-2014-0210-unvalidated-lengths-when-reading-repli.patch U_0005-CVE-2014-0211-Integer-overflow-in-fs_get_reply-_fs_s.patch U_0006-CVE-2014-0210-unvalidated-length-fields-in-fs_read_q.patch U_0007-CVE-2014-0211-integer-overflow-in-fs_read_extent_inf.patch U_0008-CVE-2014-0211-integer-overflow-in-fs_alloc_glyphs.patch U_0009-CVE-2014-0210-unvalidated-length-fields-in-fs_read_e.patch U_0010-CVE-2014-0210-unvalidated-length-fields-in-fs_read_g.patch U_0011-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch U_0012-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch U_CVE-2013-6462-unlimited-sscanf-overflows-stack-buffe.patch baselibs.conf libXfont-1.4.6.tar.bz2 libXfont.changes libXfont.spec u_libxfont_bdfreadcharacters_bailout_if_a_char_s_bitmap_cannot_be_read.patch u_libxfont_bdfreadcharacters_ensure_metrics_fit_into_xcharinfo_struct.patch u_libxfont_bdfreadproperties_property_count_needs_range_check.patch ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Other differences: ------------------ ++++++ libXfont.spec ++++++ # # spec file for package libXfont # # Copyright (c) 2015 SUSE LINUX Products GmbH, Nuernberg, Germany. # # All modifications and additions to the file contributed by third parties # remain the property of their copyright owners, unless otherwise agreed # upon. The license for this file, and modifications and additions to the # file, is the same license as for the pristine package itself (unless the # license for the pristine package is not an Open Source License, in which # case the license is the MIT License). An "Open Source License" is a # license that conforms to the Open Source Definition (Version 1.9) # published by the Open Source Initiative. # Please submit bugfixes or comments via http://bugs.opensuse.org/ # Name: libXfont %define lname libXfont1 Version: 1.4.6 Release: 0 Summary: X font handling library for server and utilities License: MIT Group: Development/Libraries/C and C++ Url: http://xorg.freedesktop.org/ #Git-Clone: git://anongit.freedesktop.org/xorg/lib/libXfont #Git-Web: http://cgit.freedesktop.org/xorg/lib/libXfont/ Source: http://xorg.freedesktop.org/releases/individual/lib/%{name}-%{version}.tar.bz2 Patch0: U_CVE-2013-6462-unlimited-sscanf-overflows-stack-buffe.patch Patch1: U_0001-CVE-2014-0209-integer-overflow-of-realloc-size-in-Fo.patch Patch2: U_0002-CVE-2014-0209-integer-overflow-of-realloc-size-in-le.patch Patch3: U_0003-CVE-2014-0210-unvalidated-length-in-_fs_recv_conn_se.patch Patch4: U_0004-CVE-2014-0210-unvalidated-lengths-when-reading-repli.patch Patch5: U_0005-CVE-2014-0211-Integer-overflow-in-fs_get_reply-_fs_s.patch Patch6: U_0006-CVE-2014-0210-unvalidated-length-fields-in-fs_read_q.patch Patch7: U_0007-CVE-2014-0211-integer-overflow-in-fs_read_extent_inf.patch Patch8: U_0008-CVE-2014-0211-integer-overflow-in-fs_alloc_glyphs.patch Patch9: U_0009-CVE-2014-0210-unvalidated-length-fields-in-fs_read_e.patch Patch10: U_0010-CVE-2014-0210-unvalidated-length-fields-in-fs_read_g.patch Patch11: U_0011-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch Patch12: U_0012-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch # CVE-2015-1802, CVE-2015-1803, CVE-2015-1804 Patch13: u_libxfont_bdfreadproperties_property_count_needs_range_check.patch Patch14: u_libxfont_bdfreadcharacters_bailout_if_a_char_s_bitmap_cannot_be_read.patch Patch15: u_libxfont_bdfreadcharacters_ensure_metrics_fit_into_xcharinfo_struct.patch BuildRoot: %{_tmppath}/%{name}-%{version}-build #git#BuildRequires: autoconf >= 2.60, automake, libtool BuildRequires: pkgconfig BuildRequires: pkgconfig(fontenc) BuildRequires: pkgconfig(fontsproto) BuildRequires: pkgconfig(freetype2) BuildRequires: pkgconfig(xorg-macros) >= 1.10 BuildRequires: pkgconfig(xproto) BuildRequires: pkgconfig(xtrans) BuildRequires: pkgconfig(zlib) #optional#BuildRequires: pkgconfig(bzip2), + --with-bzip2 %description libXfont provides the core of the legacy X11 font system, handling the index files (fonts.dir, fonts.alias, fonts.scale), the various font file formats, and rasterizing them. It is used by the X servers, the X Font Server (xfs), and some font utilities (bdftopcf for instance), but should not be used by normal X11 clients. X11 clients access fonts via either the new APIs in libXft, or the legacy APIs in libX11. %package -n %lname Summary: X font handling library for server and utilities Group: System/Libraries %description -n %lname libXfont provides the core of the legacy X11 font system, handling the index files (fonts.dir, fonts.alias, fonts.scale), the various font file formats, and rasterizing them. It is used by the X servers, the X Font Server (xfs), and some font utilities (bdftopcf for instance), but should not be used by normal X11 clients. X11 clients access fonts via either the new APIs in libXft, or the legacy APIs in libX11. %package devel Summary: Development files for the X font handling library Group: Development/Libraries/C and C++ Requires: %lname = %version %description devel libXfont provides the core of the legacy X11 font system, handling the index files (fonts.dir, fonts.alias, fonts.scale), the various font file formats, and rasterizing them. It is used by the X servers, the X Font Server (xfs), and some font utilities (bdftopcf for instance), but should not be used by normal X11 clients. X11 clients access fonts via either the new APIs in libXft, or the legacy APIs in libX11. This package contains the development headers for the library found in %lname. %prep %setup -q %patch0 -p1 %patch1 -p1 %patch2 -p1 %patch3 -p1 %patch4 -p1 %patch5 -p1 %patch6 -p1 %patch7 -p1 %patch8 -p1 %patch9 -p1 %patch10 -p1 %patch11 -p1 %patch12 -p1 %patch13 -p1 %patch14 -p1 %patch15 -p1 %build %configure --disable-static make %{?_smp_mflags} %install make install DESTDIR="%buildroot" rm -f "%buildroot/%_libdir"/*.la %post -n %lname -p /sbin/ldconfig %postun -n %lname -p /sbin/ldconfig %files -n %lname %defattr(-,root,root) %_libdir/libXfont.so.1* %files devel %defattr(-,root,root) %_includedir/X11/* %_libdir/libXfont.so %_libdir/pkgconfig/xfont.pc %changelog ++++++ U_0001-CVE-2014-0209-integer-overflow-of-realloc-size-in-Fo.patch ++++++ >From b3c8e47704a0ee40fbbd401a55a2167630a91ae6 Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:01:11 -0700 Subject: [PATCH:libXfont 01/12] CVE-2014-XXXA: integer overflow of realloc() size in FontFileAddEntry() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit FontFileReadDirectory() opens a fonts.dir file, and reads over every line in an fscanf loop. For each successful entry read (font name, file name) a call is made to FontFileAddFontFile(). FontFileAddFontFile() will add a font file entry (for the font name and file) each time it’s called, by calling FontFileAddEntry(). FontFileAddEntry() will do the actual adding. If the table it has to add to is full, it will do a realloc, adding 100 more entries to the table size without checking to see if that will overflow the int used to store the size. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fontfile/fontdir.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/fontfile/fontdir.c b/src/fontfile/fontdir.c index ef7ffa5..7271603 100644 --- a/src/fontfile/fontdir.c +++ b/src/fontfile/fontdir.c @@ -177,6 +177,11 @@ FontFileAddEntry(FontTablePtr table, FontEntryPtr prototype) if (table->sorted) return (FontEntryPtr) 0; /* "cannot" happen */ if (table->used == table->size) { + if (table->size >= ((INT32_MAX / sizeof(FontEntryRec)) - 100)) + /* If we've read so many entries we're going to ask for 2gb + or more of memory, something is so wrong with this font + directory that we should just give up before we overflow. */ + return NULL; newsize = table->size + 100; entry = realloc(table->entries, newsize * sizeof(FontEntryRec)); if (!entry) -- 1.7.9.2 ++++++ U_0002-CVE-2014-0209-integer-overflow-of-realloc-size-in-le.patch ++++++ >From 3319cc1c44e4f5cd1ddcef7ac075c2703df48006 Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:01:48 -0700 Subject: [PATCH:libXfont 02/12] CVE-2014-XXXA: integer overflow of realloc() size in lexAlias() lexAlias() reads from a file in a loop. It does this by starting with a 64 byte buffer. If that size limit is hit, it does a realloc of the buffer size << 1, basically doubling the needed length every time the length limit is hit. Eventually, this will shift out to 0 (for a length of ~4gig), and that length will be passed on to realloc(). A length of 0 (with a valid pointer) causes realloc to free the buffer on most POSIX platforms, but the caller will still have a pointer to it, leading to use after free issues. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fontfile/dirfile.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/fontfile/dirfile.c b/src/fontfile/dirfile.c index cb28333..38ced75 100644 --- a/src/fontfile/dirfile.c +++ b/src/fontfile/dirfile.c @@ -42,6 +42,7 @@ in this Software without prior written authorization from The Open Group. #include <sys/types.h> #include <sys/stat.h> #include <errno.h> +#include <limits.h> static Bool AddFileNameAliases ( FontDirectoryPtr dir ); static int ReadFontAlias ( char *directory, Bool isFile, @@ -376,6 +377,9 @@ lexAlias(FILE *file, char **lexToken) int nsize; char *nbuf; + if (tokenSize >= (INT_MAX >> 2)) + /* Stop before we overflow */ + return EALLOC; nsize = tokenSize ? (tokenSize << 1) : 64; nbuf = realloc(tokenBuf, nsize); if (!nbuf) -- 1.7.9.2 ++++++ U_0003-CVE-2014-0210-unvalidated-length-in-_fs_recv_conn_se.patch ++++++ >From ba280a2116cd57f5a9e01cd7b468fcbd96428a7d Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:02:00 -0700 Subject: [PATCH:libXfont 03/12] CVE-2014-XXXB: unvalidated length in _fs_recv_conn_setup() The connection setup reply from the font server can include a list of alternate servers to contact if this font server stops working. The reply specifies a total size of all the font server names, and then provides a list of names. _fs_recv_conn_setup() allocated the specified total size for copying the names to, but didn't check to make sure it wasn't copying more data to that buffer than the size it had allocated. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fserve.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index 3585951..aa9acdb 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -2784,7 +2784,7 @@ _fs_recv_conn_setup (FSFpePtr conn) int ret = FSIO_ERROR; fsConnSetup *setup; FSFpeAltPtr alts; - int i, alt_len; + unsigned int i, alt_len; int setup_len; char *alt_save, *alt_names; @@ -2811,8 +2811,9 @@ _fs_recv_conn_setup (FSFpePtr conn) } if (setup->num_alternates) { + size_t alt_name_len = setup->alternate_len << 2; alts = malloc (setup->num_alternates * sizeof (FSFpeAltRec) + - (setup->alternate_len << 2)); + alt_name_len); if (alts) { alt_names = (char *) (setup + 1); @@ -2821,10 +2822,25 @@ _fs_recv_conn_setup (FSFpePtr conn) { alts[i].subset = alt_names[0]; alt_len = alt_names[1]; + if (alt_len >= alt_name_len) { + /* + * Length is longer than setup->alternate_len + * told us to allocate room for, assume entire + * alternate list is corrupted. + */ +#ifdef DEBUG + fprintf (stderr, + "invalid alt list (length %lx >= %lx)\n", + (long) alt_len, (long) alt_name_len); +#endif + free(alts); + return FSIO_ERROR; + } alts[i].name = alt_save; memcpy (alt_save, alt_names + 2, alt_len); alt_save[alt_len] = '\0'; alt_save += alt_len + 1; + alt_name_len -= alt_len + 1; alt_names += _fs_pad_length (alt_len + 2); } conn->numAlts = setup->num_alternates; -- 1.7.9.2 ++++++ U_0004-CVE-2014-0210-unvalidated-lengths-when-reading-repli.patch ++++++ >From 93c37e1a39c8de9cc621dde2128a1d17e56ff4eb Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:02:12 -0700 Subject: [PATCH:libXfont 04/12] CVE-2014-XXXB: unvalidated lengths when reading replies from font server Functions to handle replies to font server requests were casting replies from the generic form to reply specific structs without first checking that the reply was at least as long as the struct being cast to. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fserve.c | 44 ++++++++++++++++++++++++++++++++++++++------ 1 file changed, 38 insertions(+), 6 deletions(-) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index aa9acdb..f08028f 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -91,6 +91,12 @@ in this Software without prior written authorization from The Open Group. (pci)->descent || \ (pci)->characterWidth) +/* + * SIZEOF(r) is in bytes, length fields in the protocol are in 32-bit words, + * so this converts for doing size comparisons. + */ +#define LENGTHOF(r) (SIZEOF(r) >> 2) + extern void ErrorF(const char *f, ...); static int fs_read_glyphs ( FontPathElementPtr fpe, FSBlockDataPtr blockrec ); @@ -206,9 +212,22 @@ _fs_add_rep_log (FSFpePtr conn, fsGenericReply *rep) rep->sequenceNumber, conn->reqbuffer[i].opcode); } + +#define _fs_reply_failed(rep, name, op) do { \ + if (rep) { \ + if (rep->type == FS_Error) \ + fprintf (stderr, "Error: %d Request: %s\n", \ + ((fsError *)rep)->request, #name); \ + else \ + fprintf (stderr, "Bad Length for %s Reply: %d %s %d\n", \ + #name, rep->length, op, LENGTHOF(name)); \ + } \ +} while (0) + #else #define _fs_add_req_log(conn,op) ((conn)->current_seq++) #define _fs_add_rep_log(conn,rep) +#define _fs_reply_failed(rep,name,op) #endif static Bool @@ -682,13 +701,15 @@ fs_read_open_font(FontPathElementPtr fpe, FSBlockDataPtr blockrec) int ret; rep = (fsOpenBitmapFontReply *) fs_get_reply (conn, &ret); - if (!rep || rep->type == FS_Error) + if (!rep || rep->type == FS_Error || + (rep->length != LENGTHOF(fsOpenBitmapFontReply))) { if (ret == FSIO_BLOCK) return StillWorking; if (rep) _fs_done_read (conn, rep->length << 2); fs_cleanup_bfont (bfont); + _fs_reply_failed (rep, fsOpenBitmapFontReply, "!="); return BadFontName; } @@ -824,13 +845,15 @@ fs_read_query_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) int ret; rep = (fsQueryXInfoReply *) fs_get_reply (conn, &ret); - if (!rep || rep->type == FS_Error) + if (!rep || rep->type == FS_Error || + (rep->length < LENGTHOF(fsQueryXInfoReply))) { if (ret == FSIO_BLOCK) return StillWorking; if (rep) _fs_done_read (conn, rep->length << 2); fs_cleanup_bfont (bfont); + _fs_reply_failed (rep, fsQueryXInfoReply, "<"); return BadFontName; } @@ -951,13 +974,15 @@ fs_read_extent_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) FontInfoRec *fi = &bfont->pfont->info; rep = (fsQueryXExtents16Reply *) fs_get_reply (conn, &ret); - if (!rep || rep->type == FS_Error) + if (!rep || rep->type == FS_Error || + (rep->length < LENGTHOF(fsQueryXExtents16Reply))) { if (ret == FSIO_BLOCK) return StillWorking; if (rep) _fs_done_read (conn, rep->length << 2); fs_cleanup_bfont (bfont); + _fs_reply_failed (rep, fsQueryXExtents16Reply, "<"); return BadFontName; } @@ -1823,13 +1848,15 @@ fs_read_glyphs(FontPathElementPtr fpe, FSBlockDataPtr blockrec) unsigned long minchar, maxchar; rep = (fsQueryXBitmaps16Reply *) fs_get_reply (conn, &ret); - if (!rep || rep->type == FS_Error) + if (!rep || rep->type == FS_Error || + (rep->length < LENGTHOF(fsQueryXBitmaps16Reply))) { if (ret == FSIO_BLOCK) return StillWorking; if (rep) _fs_done_read (conn, rep->length << 2); err = AllocError; + _fs_reply_failed (rep, fsQueryXBitmaps16Reply, "<"); goto bail; } @@ -2232,12 +2259,14 @@ fs_read_list(FontPathElementPtr fpe, FSBlockDataPtr blockrec) int err; rep = (fsListFontsReply *) fs_get_reply (conn, &ret); - if (!rep || rep->type == FS_Error) + if (!rep || rep->type == FS_Error || + (rep->length < LENGTHOF(fsListFontsReply))) { if (ret == FSIO_BLOCK) return StillWorking; if (rep) _fs_done_read (conn, rep->length << 2); + _fs_reply_failed (rep, fsListFontsReply, "<"); return AllocError; } data = (char *) rep + SIZEOF (fsListFontsReply); @@ -2356,12 +2385,15 @@ fs_read_list_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) _fs_free_props (&binfo->info); rep = (fsListFontsWithXInfoReply *) fs_get_reply (conn, &ret); - if (!rep || rep->type == FS_Error) + if (!rep || rep->type == FS_Error || + ((rep->nameLength != 0) && + (rep->length < LENGTHOF(fsListFontsWithXInfoReply)))) { if (ret == FSIO_BLOCK) return StillWorking; binfo->status = FS_LFWI_FINISHED; err = AllocError; + _fs_reply_failed (rep, fsListFontsWithXInfoReply, "<"); goto done; } /* -- 1.7.9.2 ++++++ U_0005-CVE-2014-0211-Integer-overflow-in-fs_get_reply-_fs_s.patch ++++++ >From 55e664ab0bafb35c67e5dfe5351209e792e7bafe Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:02:25 -0700 Subject: [PATCH:libXfont 05/12] CVE-2014-XXXC: Integer overflow in fs_get_reply/_fs_start_read fs_get_reply() would take any reply size, multiply it by 4 and pass to _fs_start_read. If that size was bigger than the current reply buffer size, _fs_start_read would add it to the existing buffer size plus the buffer size increment constant and realloc the buffer to that result. This math could overflow, causing the code to allocate a smaller buffer than the amount it was about to read into that buffer from the network. It could also succeed, allowing the remote font server to cause massive allocations in the X server, possibly using up all the address space in a 32-bit X server, allowing the triggering of other bugs in code that fails to handle malloc failure properly. This patch protects against both problems, by disconnecting any font server trying to feed us more than (the somewhat arbitrary) 64 mb in a single reply. Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fserve.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index f08028f..3abbacf 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -97,6 +97,9 @@ in this Software without prior written authorization from The Open Group. */ #define LENGTHOF(r) (SIZEOF(r) >> 2) +/* Somewhat arbitrary limit on maximum reply size we'll try to read. */ +#define MAX_REPLY_LENGTH ((64 * 1024 * 1024) >> 2) + extern void ErrorF(const char *f, ...); static int fs_read_glyphs ( FontPathElementPtr fpe, FSBlockDataPtr blockrec ); @@ -619,6 +622,21 @@ fs_get_reply (FSFpePtr conn, int *error) rep = (fsGenericReply *) buf; + /* + * Refuse to accept replies longer than a maximum reasonable length, + * before we pass to _fs_start_read, since it will try to resize the + * incoming connection buffer to this size. Also avoids integer overflow + * on 32-bit systems. + */ + if (rep->length > MAX_REPLY_LENGTH) + { + ErrorF("fserve: reply length %d > MAX_REPLY_LENGTH, disconnecting" + " from font server\n", rep->length); + _fs_connection_died (conn); + *error = FSIO_ERROR; + return 0; + } + ret = _fs_start_read (conn, rep->length << 2, &buf); if (ret != FSIO_READY) { -- 1.7.9.2 ++++++ U_0006-CVE-2014-0210-unvalidated-length-fields-in-fs_read_q.patch ++++++ >From cabf7953b56ab11c2a42d81a372f5805bbf819ee Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:02:34 -0700 Subject: [PATCH:libXfont 06/12] CVE-2014-XXXB: unvalidated length fields in fs_read_query_info() fs_read_query_info() parses a reply from the font server. The reply contains embedded length fields, none of which are validated. This can cause out of bound reads in either fs_read_query_info() or in _fs_convert_props() which it calls to parse the fsPropInfo in the reply. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fsconvert.c | 9 +++++++++ src/fc/fserve.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/src/fc/fsconvert.c b/src/fc/fsconvert.c index 75b5372..dfa1317 100644 --- a/src/fc/fsconvert.c +++ b/src/fc/fsconvert.c @@ -118,6 +118,10 @@ _fs_convert_props(fsPropInfo *pi, fsPropOffset *po, pointer pd, for (i = 0; i < nprops; i++, dprop++, is_str++) { memcpy(&local_off, off_adr, SIZEOF(fsPropOffset)); + if ((local_off.name.position >= pi->data_len) || + (local_off.name.length > + (pi->data_len - local_off.name.position))) + goto bail; dprop->name = MakeAtom(&pdc[local_off.name.position], local_off.name.length, 1); if (local_off.type != PropTypeString) { @@ -125,10 +129,15 @@ _fs_convert_props(fsPropInfo *pi, fsPropOffset *po, pointer pd, dprop->value = local_off.value.position; } else { *is_str = TRUE; + if ((local_off.value.position >= pi->data_len) || + (local_off.value.length > + (pi->data_len - local_off.value.position))) + goto bail; dprop->value = (INT32) MakeAtom(&pdc[local_off.value.position], local_off.value.length, 1); if (dprop->value == BAD_RESOURCE) { + bail: free (pfi->props); pfi->nprops = 0; pfi->props = 0; diff --git a/src/fc/fserve.c b/src/fc/fserve.c index 3abbacf..ec5336e 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -854,6 +854,7 @@ fs_read_query_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) FSFpePtr conn = (FSFpePtr) fpe->private; fsQueryXInfoReply *rep; char *buf; + long bufleft; /* length of reply left to use */ fsPropInfo *pi; fsPropOffset *po; pointer pd; @@ -885,6 +886,9 @@ fs_read_query_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) buf = (char *) rep; buf += SIZEOF(fsQueryXInfoReply); + bufleft = rep->length << 2; + bufleft -= SIZEOF(fsQueryXInfoReply); + /* move the data over */ fsUnpack_XFontInfoHeader(rep, pInfo); @@ -892,17 +896,50 @@ fs_read_query_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) _fs_init_fontinfo(conn, pInfo); /* Compute offsets into the reply */ + if (bufleft < SIZEOF(fsPropInfo)) + { + ret = -1; +#ifdef DEBUG + fprintf(stderr, "fsQueryXInfo: bufleft (%ld) < SIZEOF(fsPropInfo)\n", + bufleft); +#endif + goto bail; + } pi = (fsPropInfo *) buf; buf += SIZEOF (fsPropInfo); + bufleft -= SIZEOF(fsPropInfo); + if ((bufleft / SIZEOF(fsPropOffset)) < pi->num_offsets) + { + ret = -1; +#ifdef DEBUG + fprintf(stderr, + "fsQueryXInfo: bufleft (%ld) / SIZEOF(fsPropOffset) < %d\n", + bufleft, pi->num_offsets); +#endif + goto bail; + } po = (fsPropOffset *) buf; buf += pi->num_offsets * SIZEOF(fsPropOffset); + bufleft -= pi->num_offsets * SIZEOF(fsPropOffset); + if (bufleft < pi->data_len) + { + ret = -1; +#ifdef DEBUG + fprintf(stderr, + "fsQueryXInfo: bufleft (%ld) < data_len (%d)\n", + bufleft, pi->data_len); +#endif + goto bail; + } pd = (pointer) buf; buf += pi->data_len; + bufleft -= pi->data_len; /* convert the properties and step over the reply */ ret = _fs_convert_props(pi, po, pd, pInfo); + bail: _fs_done_read (conn, rep->length << 2); if (ret == -1) -- 1.7.9.2 ++++++ U_0007-CVE-2014-0211-integer-overflow-in-fs_read_extent_inf.patch ++++++ >From 4f20a0e202605566d884ed08a752edf99fa828d6 Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:02:42 -0700 Subject: [PATCH:libXfont 07/12] CVE-2014-XXXC: integer overflow in fs_read_extent_info() fs_read_extent_info() parses a reply from the font server. The reply contains a 32bit number of elements field which is used to calculate a buffer length. There is an integer overflow in this calculation which can lead to memory corruption. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fserve.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index ec5336e..96abd0e 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -70,6 +70,7 @@ in this Software without prior written authorization from The Open Group. #include "fservestr.h" #include <X11/fonts/fontutil.h> #include <errno.h> +#include <limits.h> #include <time.h> #define Time_t time_t @@ -1050,7 +1051,16 @@ fs_read_extent_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) numInfos *= 2; haveInk = TRUE; } - ci = pCI = malloc(sizeof(CharInfoRec) * numInfos); + if (numInfos >= (INT_MAX / sizeof(CharInfoRec))) { +#ifdef DEBUG + fprintf(stderr, + "fsQueryXExtents16: numInfos (%d) >= %ld\n", + numInfos, (INT_MAX / sizeof(CharInfoRec))); +#endif + pCI = NULL; + } + else + pCI = malloc(sizeof(CharInfoRec) * numInfos); if (!pCI) { -- 1.7.9.2 ++++++ U_0008-CVE-2014-0211-integer-overflow-in-fs_alloc_glyphs.patch ++++++ >From df45b2104dca6457eece772fe6171c9215ca5a09 Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:02:54 -0700 Subject: [PATCH:libXfont 08/12] CVE-2014-XXXC: integer overflow in fs_alloc_glyphs() fs_alloc_glyphs() is a malloc wrapper used by the font code. It contains a classic integer overflow in the malloc() call, which can cause memory corruption. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fsconvert.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/fc/fsconvert.c b/src/fc/fsconvert.c index dfa1317..18b0c0d 100644 --- a/src/fc/fsconvert.c +++ b/src/fc/fsconvert.c @@ -721,7 +721,12 @@ fs_alloc_glyphs (FontPtr pFont, int size) FSGlyphPtr glyphs; FSFontPtr fsfont = (FSFontPtr) pFont->fontPrivate; - glyphs = malloc (sizeof (FSGlyphRec) + size); + if (size < (INT_MAX - sizeof (FSGlyphRec))) + glyphs = malloc (sizeof (FSGlyphRec) + size); + else + glyphs = NULL; + if (glyphs == NULL) + return NULL; glyphs->next = fsfont->glyphs; fsfont->glyphs = glyphs; return (pointer) (glyphs + 1); -- 1.7.9.2 ++++++ U_0009-CVE-2014-0210-unvalidated-length-fields-in-fs_read_e.patch ++++++ >From 97c27af9e2dcb6127f7030f0bd35e9034e464f0f Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:03:05 -0700 Subject: [PATCH:libXfont 09/12] CVE-2014-XXXB: unvalidated length fields in fs_read_extent_info() Looping over the extents in the reply could go past the end of the reply buffer if the reply indicated more extents than could fit in the specified reply length. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fserve.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index 96abd0e..232e969 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -1059,6 +1059,16 @@ fs_read_extent_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) #endif pCI = NULL; } + else if (numExtents > ((rep->length - LENGTHOF(fsQueryXExtents16Reply)) + / LENGTHOF(fsXCharInfo))) { +#ifdef DEBUG + fprintf(stderr, + "fsQueryXExtents16: numExtents (%d) > (%d - %d) / %d\n", + numExtents, rep->length, + LENGTHOF(fsQueryXExtents16Reply), LENGTHOF(fsXCharInfo)); +#endif + pCI = NULL; + } else pCI = malloc(sizeof(CharInfoRec) * numInfos); -- 1.7.9.2 ++++++ U_0010-CVE-2014-0210-unvalidated-length-fields-in-fs_read_g.patch ++++++ >From b6002903efd840672d070d317911c675c2d23c1c Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 25 Apr 2014 23:03:24 -0700 Subject: [PATCH:libXfont 10/12] CVE-2014-XXXB: unvalidated length fields in fs_read_glyphs() fs_read_glyphs() parses a reply from the font server. The reply contains embedded length fields, none of which are validated. This can cause out of bound reads when looping over the glyph bitmaps in the reply. Reported-by: Ilja Van Sprundel <[email protected]> Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Adam Jackson <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> --- src/fc/fserve.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index 232e969..581bb1b 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -1907,6 +1907,7 @@ fs_read_glyphs(FontPathElementPtr fpe, FSBlockDataPtr blockrec) FontInfoPtr pfi = &pfont->info; fsQueryXBitmaps16Reply *rep; char *buf; + long bufleft; /* length of reply left to use */ fsOffset32 *ppbits; fsOffset32 local_off; char *off_adr; @@ -1938,9 +1939,33 @@ fs_read_glyphs(FontPathElementPtr fpe, FSBlockDataPtr blockrec) buf = (char *) rep; buf += SIZEOF (fsQueryXBitmaps16Reply); + bufleft = rep->length << 2; + bufleft -= SIZEOF (fsQueryXBitmaps16Reply); + + if ((bufleft / SIZEOF (fsOffset32)) < rep->num_chars) + { +#ifdef DEBUG + fprintf(stderr, + "fsQueryXBitmaps16: num_chars (%d) > bufleft (%ld) / %d\n", + rep->num_chars, bufleft, SIZEOF (fsOffset32)); +#endif + err = AllocError; + goto bail; + } ppbits = (fsOffset32 *) buf; buf += SIZEOF (fsOffset32) * (rep->num_chars); + bufleft -= SIZEOF (fsOffset32) * (rep->num_chars); + if (bufleft < rep->nbytes) + { +#ifdef DEBUG + fprintf(stderr, + "fsQueryXBitmaps16: nbytes (%d) > bufleft (%ld)\n", + rep->nbytes, bufleft); +#endif + err = AllocError; + goto bail; + } pbitmaps = (pointer ) buf; if (blockrec->type == FS_LOAD_GLYPHS) @@ -1998,7 +2023,9 @@ fs_read_glyphs(FontPathElementPtr fpe, FSBlockDataPtr blockrec) */ if (NONZEROMETRICS(&fsdata->encoding[minchar].metrics)) { - if (local_off.length) + if (local_off.length && + (local_off.position < rep->nbytes) && + (local_off.length <= (rep->nbytes - local_off.position))) { bits = allbits; allbits += local_off.length; -- 1.7.9.2 ++++++ U_0011-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch ++++++ >From 70d50a17a3302f614bc3a8ee6a3f8258373e9301 Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 2 May 2014 19:24:17 -0700 Subject: [PATCH:libXfont 11/12] CVE-2014-XXXB: unvalidated length fields in fs_read_list() fs_read_list() parses a reply from the font server. The reply contains a list of strings with embedded length fields, none of which are validated. This can cause out of bound reads when looping over the strings in the reply. Signed-off-by: Alan Coopersmith <[email protected]> --- src/fc/fserve.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index 581bb1b..4dcdc04 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -2355,6 +2355,7 @@ fs_read_list(FontPathElementPtr fpe, FSBlockDataPtr blockrec) FSBlockedListPtr blist = (FSBlockedListPtr) blockrec->data; fsListFontsReply *rep; char *data; + long dataleft; /* length of reply left to use */ int length, i, ret; @@ -2372,16 +2373,30 @@ fs_read_list(FontPathElementPtr fpe, FSBlockDataPtr blockrec) return AllocError; } data = (char *) rep + SIZEOF (fsListFontsReply); + dataleft = (rep->length << 2) - SIZEOF (fsListFontsReply); err = Successful; /* copy data into FontPathRecord */ for (i = 0; i < rep->nFonts; i++) { + if (dataleft < 1) + break; length = *(unsigned char *)data++; + dataleft--; /* used length byte */ + if (length > dataleft) { +#ifdef DEBUG + fprintf(stderr, + "fsListFonts: name length (%d) > dataleft (%ld)\n", + length, dataleft); +#endif + err = BadFontName; + break; + } err = AddFontNamesName(blist->names, data, length); if (err != Successful) break; data += length; + dataleft -= length; } _fs_done_read (conn, rep->length << 2); return err; -- 1.7.9.2 ++++++ U_0012-CVE-2014-0210-unvalidated-length-fields-in-fs_read_l.patch ++++++ >From dd42c0c54adb4aee7ba779495ab840d3dd36b38f Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Fri, 2 May 2014 19:24:17 -0700 Subject: [PATCH:libXfont 12/12] CVE-2014-XXXB: unvalidated length fields in fs_read_list_info() fs_read_list_info() parses a reply from the font server. The reply contains a number of additional data items with embedded length or count fields, none of which are validated. This can cause out of bound reads when looping over these items in the reply. Signed-off-by: Alan Coopersmith <[email protected]> --- src/fc/fserve.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/src/fc/fserve.c b/src/fc/fserve.c index 4dcdc04..c1cf9d6 100644 --- a/src/fc/fserve.c +++ b/src/fc/fserve.c @@ -2491,6 +2491,7 @@ fs_read_list_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) FSBlockedListInfoPtr binfo = (FSBlockedListInfoPtr) blockrec->data; fsListFontsWithXInfoReply *rep; char *buf; + long bufleft; FSFpePtr conn = (FSFpePtr) fpe->private; fsPropInfo *pi; fsPropOffset *po; @@ -2527,6 +2528,7 @@ fs_read_list_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) } buf = (char *) rep + SIZEOF (fsListFontsWithXInfoReply); + bufleft = (rep->length << 2) - SIZEOF (fsListFontsWithXInfoReply); /* * The original FS implementation didn't match @@ -2535,19 +2537,71 @@ fs_read_list_info(FontPathElementPtr fpe, FSBlockDataPtr blockrec) */ if (conn->fsMajorVersion <= 1) { + if (rep->nameLength > bufleft) { +#ifdef DEBUG + fprintf(stderr, + "fsListFontsWithXInfo: name length (%d) > bufleft (%ld)\n", + (int) rep->nameLength, bufleft); +#endif + err = AllocError; + goto done; + } + /* binfo->name is a 256 char array, rep->nameLength is a CARD8 */ memcpy (binfo->name, buf, rep->nameLength); buf += _fs_pad_length (rep->nameLength); + bufleft -= _fs_pad_length (rep->nameLength); } pi = (fsPropInfo *) buf; + if (SIZEOF (fsPropInfo) > bufleft) { +#ifdef DEBUG + fprintf(stderr, + "fsListFontsWithXInfo: PropInfo length (%d) > bufleft (%ld)\n", + (int) SIZEOF (fsPropInfo), bufleft); +#endif + err = AllocError; + goto done; + } + bufleft -= SIZEOF (fsPropInfo); buf += SIZEOF (fsPropInfo); po = (fsPropOffset *) buf; + if (pi->num_offsets > (bufleft / SIZEOF (fsPropOffset))) { +#ifdef DEBUG + fprintf(stderr, + "fsListFontsWithXInfo: offset length (%d * %d) > bufleft (%ld)\n", + pi->num_offsets, (int) SIZEOF (fsPropOffset), bufleft); +#endif + err = AllocError; + goto done; + } + bufleft -= pi->num_offsets * SIZEOF (fsPropOffset); buf += pi->num_offsets * SIZEOF (fsPropOffset); pd = (pointer) buf; + if (pi->data_len > bufleft) { +#ifdef DEBUG + fprintf(stderr, + "fsListFontsWithXInfo: data length (%d) > bufleft (%ld)\n", + pi->data_len, bufleft); +#endif + err = AllocError; + goto done; + } + bufleft -= pi->data_len; buf += pi->data_len; if (conn->fsMajorVersion > 1) { + if (rep->nameLength > bufleft) { +#ifdef DEBUG + fprintf(stderr, + "fsListFontsWithXInfo: name length (%d) > bufleft (%ld)\n", + (int) rep->nameLength, bufleft); +#endif + err = AllocError; + goto done; + } + /* binfo->name is a 256 char array, rep->nameLength is a CARD8 */ memcpy (binfo->name, buf, rep->nameLength); buf += _fs_pad_length (rep->nameLength); + bufleft -= _fs_pad_length (rep->nameLength); } #ifdef DEBUG -- 1.7.9.2 ++++++ U_CVE-2013-6462-unlimited-sscanf-overflows-stack-buffe.patch ++++++ >From 4d024ac10f964f6bd372ae0dd14f02772a6e5f63 Mon Sep 17 00:00:00 2001 From: Alan Coopersmith <[email protected]> Date: Mon, 23 Dec 2013 18:34:02 -0800 Subject: [PATCH] CVE-2013-6462: unlimited sscanf overflows stack buffer in bdfReadCharacters() Fixes cppcheck warning: [lib/libXfont/src/bitmap/bdfread.c:341]: (warning) scanf without field width limits can crash with huge input data. Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Matthieu Herrb <[email protected]> Reviewed-by: Jeremy Huddleston Sequoia <[email protected]> --- src/bitmap/bdfread.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/bitmap/bdfread.c b/src/bitmap/bdfread.c index e2770dc..e11c5d2 100644 --- a/src/bitmap/bdfread.c +++ b/src/bitmap/bdfread.c @@ -338,7 +338,7 @@ bdfReadCharacters(FontFilePtr file, FontPtr pFont, bdfFileState *pState, char charName[100]; int ignore; - if (sscanf((char *) line, "STARTCHAR %s", charName) != 1) { + if (sscanf((char *) line, "STARTCHAR %99s", charName) != 1) { bdfError("bad character name in BDF file\n"); goto BAILOUT; /* bottom of function, free and return error */ } -- 1.8.1.4 ++++++ baselibs.conf ++++++ libXfont1 libXfont-devel requires -libXfont-<targettype> requires "libXfont1-<targettype> = <version>" ++++++ u_libxfont_bdfreadcharacters_bailout_if_a_char_s_bitmap_cannot_be_read.patch ++++++ Subject: bdfReadCharacters: bailout if a char's bitmap cannot be read References: bnc#921978, CVE-2015-1803 Signed-off-by: [email protected] cannot be read [CVE-2015-BBBB] --- src/bitmap/bdfread.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/src/bitmap/bdfread.c +++ a/src/bitmap/bdfread.c @@ -458,7 +458,10 @@ bdfReadCharacters(FontFilePtr file, FontPtr pFont, bdfFileState *pState, ci->metrics.descent = -bb; ci->metrics.characterWidth = wx; ci->bits = NULL; - bdfReadBitmap(ci, file, bit, byte, glyph, scan, bitmapsSizes); + if (!bdfReadBitmap(ci, file, bit, byte, glyph, scan, bitmapsSizes)) { + bdfError("could not read bitmap for character '%s'\n", charName); + goto BAILOUT; + } ci++; ndx++; } else -- ++++++ u_libxfont_bdfreadcharacters_ensure_metrics_fit_into_xcharinfo_struct.patch ++++++ Subject: bdfReadCharacters: ensure metrics fit into xCharInfo struct References: bnc#921978, CVE-2015-1804 Signed-off-by: [email protected] xCharInfo struct [CVE-2015-CCCC] being < 0 reduces the number of cases we need to check for overflow. --- src/bitmap/bdfread.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) --- a/src/bitmap/bdfread.c +++ a/src/bitmap/bdfread.c @@ -62,8 +62,16 @@ from The Open Group. #if HAVE_STDINT_H #include <stdint.h> -#elif !defined(INT32_MAX) -#define INT32_MAX 0x7fffffff +#else +# ifndef INT32_MAX +# define INT32_MAX 0x7fffffff +# endif +# ifndef INT16_MAX +# define INT16_MAX 0x7fff +# endif +# ifndef INT16_MIN +# define INT16_MIN (0 - 0x8000) +# endif #endif #define INDICES 256 @@ -417,6 +425,12 @@ bdfReadCharacters(FontFilePtr file, FontPtr pFont, bdfFileState *pState, bdfError("DWIDTH y value must be zero\n"); goto BAILOUT; } + /* xCharInfo metrics are stored as INT16 */ + if ((wx < 0) || (wx > INT16_MAX)) { + bdfError("character '%s' has out of range width, %d\n", + charName, wx); + goto BAILOUT; + } line = bdfGetLine(file, lineBuf, BDFLINELEN); if ((!line) || (sscanf((char *) line, "BBX %d %d %d %d", &bw, &bh, &bl, &bb) != 4)) { bdfError("bad 'BBX'\n"); @@ -427,6 +441,14 @@ bdfReadCharacters(FontFilePtr file, FontPtr pFont, bdfFileState *pState, charName, bw, bh); goto BAILOUT; } + /* xCharInfo metrics are read as int, but stored as INT16 */ + if ((bl > INT16_MAX) || (bl < INT16_MIN) || + (bb > INT16_MAX) || (bb < INT16_MIN) || + (bw > (INT16_MAX - bl)) || (bh > (INT16_MAX - bb))) { + bdfError("character '%s' has out of range metrics, %d %d %d %d\n", + charName, bl, (bl+bw), (bh+bb), -bb); + goto BAILOUT; + } line = bdfGetLine(file, lineBuf, BDFLINELEN); if ((line) && (bdfIsPrefix(line, "ATTRIBUTES"))) { for (p = line + strlen("ATTRIBUTES "); -- ++++++ u_libxfont_bdfreadproperties_property_count_needs_range_check.patch ++++++ Subject: bdfReadProperties: property count needs range check References: bnc#921978, CVE-2015-1802 Signed-off-by: [email protected] check [CVE-2015-AAAA] --- src/bitmap/bdfread.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/src/bitmap/bdfread.c +++ a/src/bitmap/bdfread.c @@ -604,7 +604,9 @@ bdfReadProperties(FontFilePtr file, FontPtr pFont, bdfFileState *pState) bdfError("missing 'STARTPROPERTIES'\n"); return (FALSE); } - if (sscanf((char *) line, "STARTPROPERTIES %d", &nProps) != 1) { + if ((sscanf((char *) line, "STARTPROPERTIES %d", &nProps) != 1) || + (nProps <= 0) || + (nProps > ((INT32_MAX / sizeof(FontPropRec)) - BDF_GENPROPS))) { bdfError("bad 'STARTPROPERTIES'\n"); return (FALSE); } -- -- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
