Bug 1209943 (CVE-2013-7439) - CVE-2013-7439 libX11: buffer overflow in MakeBigReq macro
Summary: CVE-2013-7439 libX11: buffer overflow in MakeBigReq macro
Alias: CVE-2013-7439
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 1209944
TreeView+ depends on / blocked
Reported: 2015-04-08 13:36 UTC by Vasyl Kaigorodov
Modified: 2021-02-17 05:26 UTC (History)
6 users (show)

Fixed In Version: libX11
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-08-22 06:34:44 UTC

Attachments (Terms of Use)

Description Vasyl Kaigorodov 2015-04-08 13:36:54 UTC
The MakeBigReq macro in libX11 before version contained a 4-byte buffer overflow:


Fixed by the following commit in libX11


CVE request: http://seclists.org/oss-sec/2015/q2/73

Comment 1 Huzaifa S. Sidhpurwala 2015-04-09 06:27:55 UTC

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:


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 07:13:54 UTC
This issue was assigned CVE-2013-7439 via 


Comment 3 Till Maas 2015-04-15 16:28:16 UTC
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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