Bug 1048044 (CVE-2013-6462) - CVE-2013-6462 libXfont: stack-based buffer overflow flaw when parsing Glyph Bitmap Distribution Format (BDF) fonts
Summary: CVE-2013-6462 libXfont: stack-based buffer overflow flaw when parsing Glyph B...
Alias: CVE-2013-6462
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1048048 1049569 1049684 1049685 1049686 1049687
Blocks: 1048049
TreeView+ depends on / blocked
Reported: 2014-01-03 01:39 UTC by Murray McAllister
Modified: 2023-05-12 01:45 UTC (History)
8 users (show)

Fixed In Version: libXfont 1.4.7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2014-01-10 09:57:13 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0018 0 normal SHIPPED_LIVE Important: libXfont security update 2014-01-10 14:43:43 UTC

Description Murray McAllister 2014-01-03 01:39:56 UTC
A stack-based buffer overflow flaw was found in the way the libXfont library, used by the X.Org server, parsed Glyph Bitmap Distribution Format (BDF) fonts. A malicious, local user could exploit this issue to potentially execute arbitrary code with the privileges of the X.Org server.


Red Hat would like to thank the X.Org security team for reporting this issue.

Comment 8 Vincent Danen 2014-01-07 19:13:26 UTC
This issue is now public, and is noted as being fixed in libXfont 1.4.7 via the following commit:


It is also noted as affecting every version of X from X11R5 to libXfont 1.4.6.

External References:


Comment 9 Vincent Danen 2014-01-07 19:15:44 UTC
Created libXfont tracking bugs for this issue:

Affects: fedora-all [bug 1049569]

Comment 12 errata-xmlrpc 2014-01-10 09:46:22 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2014:0018 https://rhn.redhat.com/errata/RHSA-2014-0018.html

Comment 13 Tomas Hoger 2014-01-10 10:22:41 UTC
Some media coverage:


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