Bug 953722 (CVE-2013-1969) - CVE-2013-1969 libxml2: multiple use-after-free flaws
Summary: CVE-2013-1969 libxml2: multiple use-after-free flaws
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2013-1969
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 953723
TreeView+ depends on / blocked
 
Reported: 2013-04-19 03:36 UTC by Vincent Danen
Modified: 2021-02-17 07:47 UTC (History)
3 users (show)

Fixed In Version: libxml2 2.9.1
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-07-24 12:01:10 UTC


Attachments (Terms of Use)

Description Vincent Danen 2013-04-19 03:36:40 UTC
Multiple use-after-free flaws were reported [1] in libxml2 2.9.0, which could be used to cause a denial of service or, possibly, the execution of arbitrary code by the privileges of the user running an application linked to libxml2.

1) A use-after-free error in the "htmlParseChunk()" function can be exploited to dereference already freed memory.

2) Two use-after-free errors in the "xmldecl_done()" function can be exploited to dereference already freed memory.

These issues have been fixed in git [2].  Based on the bug report, the implication is that these flaws were introduced in version 2.9.0 (this has not yet been verified though).


[1] https://bugzilla.gnome.org/show_bug.cgi?id=690202
[2] https://git.gnome.org/browse/libxml2/commit/?id=de0cc20c29cb3f056062925395e0f68d2250a46f

Comment 2 Stefan Cornelius 2013-04-30 13:56:42 UTC
Statement:

This issue does not affect the version of libxml2 as shipped with Red Hat Enterprise Linux 5 and 6. This issue does not affect version of mingw32-libxml2 as shipped with Red Hat Enterprise Linux 5 and 6.

Comment 3 Stefan Cornelius 2013-07-24 12:01:10 UTC
These issues were introduced in version 2.9.0 and subsequently fixed in version 2.9.1.


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