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[ GLSA 200409-34 ] X.org, XFree86: Integer and stack overflows in libXpm
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GLSA
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Joined: 13 Jun 2003
Posts: 4078
Location: Barcelona, Spain

PostPosted: Mon Sep 27, 2004 9:52 am    Post subject: [ GLSA 200409-34 ] X.org, XFree86: Integer and stack overflo Reply with quote

Gentoo Linux Security Advisory

Title: X.org, XFree86: Integer and stack overflows in libXpm (GLSA 200409-34)
Severity: normal
Exploitable: remote
Date: September 27, 2004
Updated: May 27, 2006
Bug(s): #64152
ID: 200409-34

Synopsis


libXpm, the X Pixmap library that is a part of the X Window System,
contains multiple stack and integer overflows that may allow a
carefully-crafted XPM file to crash applications linked against libXpm,
potentially allowing the execution of arbitrary code.


Background


XFree86 and X.org are both implementations of the X Window System.


Affected Packages

Package: x11-base/xorg-x11
Vulnerable: < 6.7.0-r2
Vulnerable: = 6.8.0
Unaffected: >= 6.7.0-r2 < 6.7.1
Unaffected: >= 6.8.0-r1
Architectures: All supported architectures

Package: x11-base/xfree
Vulnerable: < 4.3.0-r7
Unaffected: >= 4.3.0-r7
Architectures: alpha x86

Package: x11-base/xfree
Vulnerable: < 4.3.0-r7
Architectures: amd64 hppa ia64 mips ppc sparc


Description


Chris Evans has discovered multiple integer and stack overflow
vulnerabilities in the X Pixmap library, libXpm, which is a part of the
X Window System. These overflows can be exploited by the execution of a
malicious XPM file, which can crash applications that are dependent on
libXpm.


Impact


A carefully-crafted XPM file could crash applications that are linked
against libXpm, potentially allowing the execution of arbitrary code
with the privileges of the user running the application.


Workaround


There is no known workaround at this time.


Resolution


All X.org users should upgrade to the latest version:
Code:
# emerge sync
   
    # emerge -pv ">=x11-base/xorg-x11-6.7.0-r2"
# emerge ">=x11-base/xorg-x11-6.7.0-r2"

All XFree86 users should upgrade to the latest version:
Code:
# emerge sync
   
    # emerge -pv ">=x11-base/xfree-4.3.0-r7"
# emerge ">=x11-base/xfree-4.3.0-r7"

Note: Usage of XFree86 is deprecated on the AMD64, HPPA, IA64, MIPS,
PPC and SPARC architectures: XFree86 users on those architectures
should switch to X.org rather than upgrading XFree86.


References

X.org Security Advisory
X11R6.8.1 Release Notes
CAN-2004-0687
CAN-2004-0688


Last edited by GLSA on Fri Mar 21, 2014 4:17 am; edited 4 times in total
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