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Gentoo Linux Security Advisory GLSA 200409-34 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: X.org, XFree86: Integer and stack overflows in libXpm |
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Date: September 27, 2004 |
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Bugs: #64152 |
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ID: 200409-34 |
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Synopsis |
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======== |
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|
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libXpm, the X Pixmap library that is a part of the X Window System, |
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contains multiple stack and integer overflows that may allow a |
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carefully-crafted XPM file to crash applications linked against |
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libXpm, potentially allowing the execution of arbitrary code. |
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|
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Background |
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========== |
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|
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XFree86 and X.org are both implementations of the X Window System. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 x11-base/xorg-x11 < 6.7.0-r2 *>= 6.7.0-r2 |
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== 6.8.0 >= 6.8.0-r1 |
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2 x11-base/xfree < 4.3.0-r7 >= 4.3.0-r7 |
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------------------------------------------------------------------- |
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# Package 2 [x11-base/xfree] only applies to ALPHA and x86 users. |
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|
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NOTE: Any packages listed without architecture tags apply to all |
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architectures... |
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------------------------------------------------------------------- |
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NOTE: Usage of XFree86 is deprecated on the AMD64, HPPA, IA64, |
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MIPS, PPC and SPARC architectures: XFree86 users on those |
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architectures should switch to X.org rather than upgrading |
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XFree86. |
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------------------------------------------------------------------- |
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2 affected packages |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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Chris Evans has discovered multiple integer and stack overflow |
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vulnerabilities in the X Pixmap library, libXpm, which is a part of the |
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X Window System. These overflows can be exploited by the execution of a |
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malicious XPM file, which can crash applications that are dependent on |
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libXpm. |
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|
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Impact |
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====== |
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|
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A carefully-crafted XPM file could crash applications that are linked |
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against libXpm, potentially allowing the execution of arbitrary code |
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with the privileges of the user running the application. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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Resolution |
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========== |
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All X.org users should upgrade to the latest version: |
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# emerge sync |
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# emerge -pv ">=x11-base/xorg-x11-6.7.0-r2" |
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# emerge ">=x11-base/xorg-x11-6.7.0-r2" |
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|
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All XFree86 users should upgrade to the latest version: |
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# emerge sync |
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# emerge -pv ">=x11-base/xfree-4.3.0-r7" |
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# emerge ">=x11-base/xfree-4.3.0-r7" |
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|
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Note: Usage of XFree86 is deprecated on the AMD64, HPPA, IA64, MIPS, |
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PPC and SPARC architectures: XFree86 users on those architectures |
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should switch to X.org rather than upgrading XFree86. |
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|
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References |
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========== |
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|
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[ 1 ] X.org Security Advisory |
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http://freedesktop.org/pipermail/xorg/2004-September/003196.html |
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[ 2 ] X11R6.8.1 Release Notes |
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http://freedesktop.org/pipermail/xorg/2004-September/003172.html |
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[ 3 ] CAN-2004-0687 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0687 |
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[ 4 ] CAN-2004-0688 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0688 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200409-34.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2004 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/1.0 |
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