CVE-2013-7439

high
Published 2015-04-16 · Modified 2026-05-06
CVSS v3
CVSS v2
7.5
VIR risk
7.5

Description

Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before 1.6.0 allow remote attackers to have unspecified impact via a crafted request, which triggers a buffer overflow.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2013-7439

vendor Authored 2026-05-27

Vendor advisory: security@ubuntu.com — http://lists.x.org/archives/xorg-announce/2015-April/002561.html

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed2:1.6.0-1
debian debianbullseyefixed2:1.6.0-1
debian debianforkyfixed2:1.6.0-1
debian debiansidfixed2:1.6.0-1
debian debiantrixiefixed2:1.6.0-1
ubuntu ubuntu12.04affected
ubuntu ubuntu14.04affected
ubuntu ubuntu14.10affected
debian debian7.0affected

Application impact

VendorProductVersionsFixed
x.orglibx111.0.1
x.orglibx111.0.2
x.orglibx111.0.3
x.orglibx111.1
x.orglibx111.1.4
x.orglibx111.1.5
x.orglibx111.1.6
x.orglibx111.1.99.1
x.orglibx111.1.99.2
x.orglibx111.2
x.orglibx111.2.1
x.orglibx111.2.2
x.orglibx111.3
x.orglibx111.3.1
x.orglibx111.3.2
x.orglibx111.3.3
x.orglibx111.3.4
x.orglibx111.3.5
x.orglibx111.3.6
x.orglibx111.3.99.901
x.orglibx111.3.99.902
x.orglibx111.3.99.903
x.orglibx111.4.0
x.orglibx111.4.1
x.orglibx111.4.2
x.orglibx111.4.3
x.orglibx111.4.4
x.orglibx111.4.99.901
x.orglibx111.4.99.902
x.orglibx111.5.0
x.orglibx111.5.99.901
x.orglibx111.5.99.902
x.orgx116.0
x.orgx116.1
x.orgx116.3
x.orgx116.4
x.orgx116.5.1
x.orgx116.6
x.orgx116.7
x.orgx116.8.0
x.orgx116.8.1
x.orgx116.8.2
x.orgx116.9

References

CWEs

CWE-189

Verify integrity in audit chain (admin only). AS-IS.