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Bug 1209943 - (CVE-2013-7439) CVE-2013-7439 libX11: buffer overflow in MakeBigReq macro
CVE-2013-7439 libX11: buffer overflow in MakeBigReq macro
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20130309,reported=2...
: Reopened, Security
Depends On:
Blocks: 1209944
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Reported: 2015-04-08 09:36 EDT by Vasyl Kaigorodov
Modified: 2015-08-22 02:34 EDT (History)
6 users (show)

See Also:
Fixed In Version: libX11 1.5.99.901
Doc Type: Bug Fix
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Last Closed: 2015-08-22 02:34:44 EDT
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Description Vasyl Kaigorodov 2015-04-08 09:36:54 EDT
The MakeBigReq macro in libX11 before version 1.5.99.901 contained a 4-byte buffer overflow:

https://bugs.freedesktop.org/show_bug.cgi?id=56508

Fixed by the following commit in libX11 1.5.99.901:

http://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=39547d600a13713e15429f49768e54c3173c828d

CVE request: http://seclists.org/oss-sec/2015/q2/73
Comment 1 Huzaifa S. Sidhpurwala 2015-04-09 02:27:55 EDT
Statement:

This issue does not affect the version of libX11 package as shipped with Red Hat Enterprise Linux 7.

This issue was was fixed in Red Hat Enterprise Linux 6 via the following security advisory:

https://rhn.redhat.com/errata/RHSA-2014-1436.html

This issue affects the version of libX11 package as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Extended Life Cycle phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates.
Comment 2 Huzaifa S. Sidhpurwala 2015-04-09 03:13:54 EDT
This issue was assigned CVE-2013-7439 via 

http://www.openwall.com/lists/oss-security/2015/04/09/1
Comment 3 Till Maas 2015-04-15 12:28:16 EDT
According to http://lists.x.org/archives/xorg-announce/2015-April/002561.html a rebuild of all software using the vulnerable version of the macros is required. Is this tracked somewhere or did this already happen? Did this happen for EPEL?

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