Package: libxml2
Version: 2.7.8.dfsg-5.1
Severity: grave
Tags: patch security
Justification: user security hole
User: ubuntu-de...@lists.ubuntu.com
Usertags: origin-ubuntu precise ubuntu-patch
Dear Maintainer,
In Ubuntu, the attached patch was applied to achieve the following:
* SECURITY UPDATE: denial of service via buffer overflow
- parser.c: fix an allocation error when copying entities
- 5bd3c061823a8499b27422aee04ea20aae24f03e
- CVE-2011-3919
Thanks for considering the patch.
References:
http://git.gnome.org/browse/libxml2/commit/?id=5bd3c061823a8499b27422aee04ea20aae24f03e
http://src.chromium.org/svn/trunk/src/third_party/libxml/README.chromium
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3919
http://googlechromereleases.blogspot.com/2012/01/stable-channel-update.html
-- System Information:
Debian Release: wheezy/sid
APT prefers precise-updates
APT policy: (500, 'precise-updates'), (500, 'precise-security'), (500,
'precise')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-8-generic (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
diff -u libxml2-2.7.8.dfsg/parser.c libxml2-2.7.8.dfsg/parser.c
--- libxml2-2.7.8.dfsg/parser.c
+++ libxml2-2.7.8.dfsg/parser.c
@@ -2709,7 +2709,7 @@
buffer[nbchars++] = '&';
if (nbchars > buffer_size - i - XML_PARSER_BUFFER_SIZE) {
- growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
+ growBuffer(buffer, i + XML_PARSER_BUFFER_SIZE);
}
for (;i > 0;i--)
buffer[nbchars++] = *cur++;
diff -u libxml2-2.7.8.dfsg/debian/changelog libxml2-2.7.8.dfsg/debian/changelog
