Your message dated Sat, 10 Sep 2022 13:40:55 +0100
with message-id
<2cfc9645343bdb910fe19c07bddfec2c428346a3.ca...@adam-barratt.org.uk>
and subject line Closing requests for updates included in 10.13
has caused the Debian Bug report #1010305,
regarding buster-pu: package freetype/2.9.1-3+deb10u3
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1010305: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1010305
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: release.debian.org
Severity: normal
Tags: buster
User: [email protected]
Usertags: pu
This update fixes three security vulnerabilities in FreeType 2.9.1-3+deb10u2.
- CVE-2022-27404: heap buffer overflow via invalid integer decrement in
sfnt_init_face().
- CVE-2022-27405: segmentation violation via ft_open_face_internal() when
attempting to read the value of FT_LONG face_index.
- CVE-2022-27406: segmentation violation via FT_Request_Size() when attempting
to read the value of an unguarded face size handle.
It would be ideal to get these fixes into Buster.
diff -Nru freetype-2.9.1/debian/changelog freetype-2.9.1/debian/changelog
--- freetype-2.9.1/debian/changelog 2020-10-21 06:15:41.000000000 +1100
+++ freetype-2.9.1/debian/changelog 2022-04-28 21:11:36.000000000 +1000
@@ -1,3 +1,15 @@
+freetype (2.9.1-3+deb10u3) buster; urgency=medium
+
+ * Add upstream patches to fix multiple vulnerabilities. Closes: #1010183.
+ - CVE-2022-27404: heap buffer overflow via invalid integer decrement in
+ sfnt_init_face().
+ - CVE-2022-27405: segmentation violation via ft_open_face_internal() when
+ attempting to read the value of FT_LONG face_index.
+ - CVE-2022-27406: segmentation violation via FT_Request_Size() when
+ attempting to read the value of an unguarded face size handle.
+
+ -- Hugh McMaster <[email protected]> Thu, 28 Apr 2022 21:11:36 +1000
+
freetype (2.9.1-3+deb10u2) buster-security; urgency=high
* Non-maintainer upload by the Security Team.
diff -Nru freetype-2.9.1/debian/patches/CVE-2022-27404.patch
freetype-2.9.1/debian/patches/CVE-2022-27404.patch
--- freetype-2.9.1/debian/patches/CVE-2022-27404.patch 1970-01-01
10:00:00.000000000 +1000
+++ freetype-2.9.1/debian/patches/CVE-2022-27404.patch 2022-04-28
21:06:58.000000000 +1000
@@ -0,0 +1,19 @@
+Description: Check `face_index` before decrementing to prevent heap buffer
+ overflow (CVE-2022-27404).
+Author: Werner Lemberg
+Origin:
https://gitlab.freedesktop.org/freetype/freetype/-/commit/53dfdcd8198d2b3201a23c4bad9190519ba918db
+Bug: https://gitlab.freedesktop.org/freetype/freetype/-/issues/1138
+Bug-Debian: https://bugs.debian.org/1010183
+Last-Update: 2022-04-28
+
+--- a/src/sfnt/sfobjs.c
++++ b/src/sfnt/sfobjs.c
+@@ -923,7 +923,7 @@
+ face_index = FT_ABS( face_instance_index ) & 0xFFFF;
+
+ /* value -(N+1) requests information on index N */
+- if ( face_instance_index < 0 )
++ if ( face_instance_index < 0 && face_index > 0 )
+ face_index--;
+
+ if ( face_index >= face->ttc_header.count )
diff -Nru freetype-2.9.1/debian/patches/CVE-2022-27405.patch
freetype-2.9.1/debian/patches/CVE-2022-27405.patch
--- freetype-2.9.1/debian/patches/CVE-2022-27405.patch 1970-01-01
10:00:00.000000000 +1000
+++ freetype-2.9.1/debian/patches/CVE-2022-27405.patch 2022-04-28
21:08:12.000000000 +1000
@@ -0,0 +1,26 @@
+Description: Properly guard `face_index` before attempting to read its value
+ (CVE-2022-27405).
+Author: Werner Lemberg
+Origin:
https://gitlab.freedesktop.org/freetype/freetype/-/commit/22a0cccb4d9d002f33c1ba7a4b36812c7d4f46b5
+Bug: https://gitlab.freedesktop.org/freetype/freetype/-/issues/1139
+Bug-Debian: https://bugs.debian.org/1010183
+Last-Update: 2022-04-28
+
+--- a/src/base/ftobjs.c
++++ b/src/base/ftobjs.c
+@@ -2345,6 +2345,15 @@
+ #endif
+
+
++ /* only use lower 31 bits together with sign bit */
++ if ( face_index > 0 )
++ face_index &= 0x7FFFFFFFL;
++ else
++ {
++ face_index &= 0x7FFFFFFFL;
++ face_index = -face_index;
++ }
++
+ #ifdef FT_DEBUG_LEVEL_TRACE
+ FT_TRACE3(( "FT_Open_Face: " ));
+ if ( face_index < 0 )
diff -Nru freetype-2.9.1/debian/patches/CVE-2022-27406.patch
freetype-2.9.1/debian/patches/CVE-2022-27406.patch
--- freetype-2.9.1/debian/patches/CVE-2022-27406.patch 1970-01-01
10:00:00.000000000 +1000
+++ freetype-2.9.1/debian/patches/CVE-2022-27406.patch 2022-04-28
21:09:23.000000000 +1000
@@ -0,0 +1,20 @@
+Description: Guard the `face->size` handle before attempting to read its value
+ (CVE-2022-27406).
+Author: Werner Lemberg
+Origin:
https://gitlab.freedesktop.org/freetype/freetype/-/commit/0c2bdb01a2e1d24a3e592377a6d0822856e10df2
+Bug: https://gitlab.freedesktop.org/freetype/freetype/-/issues/1140
+Bug-Debian: https://bugs.debian.org/1010183
+Last-Update: 2022-04-28
+
+--- a/src/base/ftobjs.c
++++ b/src/base/ftobjs.c
+@@ -3209,6 +3209,9 @@
+ if ( !face )
+ return FT_THROW( Invalid_Face_Handle );
+
++ if ( !face->size )
++ return FT_THROW( Invalid_Size_Handle );
++
+ if ( !req || req->width < 0 || req->height < 0 ||
+ req->type >= FT_SIZE_REQUEST_TYPE_MAX )
+ return FT_THROW( Invalid_Argument );
diff -Nru freetype-2.9.1/debian/patches/series
freetype-2.9.1/debian/patches/series
--- freetype-2.9.1/debian/patches/series 2020-10-21 06:15:41.000000000
+1100
+++ freetype-2.9.1/debian/patches/series 2022-04-28 21:09:11.000000000
+1000
@@ -9,3 +9,6 @@
no-web-fonts.patch
hide-donations-information.patch
sfnt-Fix-heap-buffer-overflow-59308.patch
+CVE-2022-27404.patch
+CVE-2022-27405.patch
+CVE-2022-27406.patch
--- End Message ---
--- Begin Message ---
Package: release.debian.org
Version: 10.13
Hi,
Each of the updates referenced in these bugs was included in today's
10.13 point release.
Regards,
Adam
--- End Message ---
