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Gentoo Linux Security Advisory GLSA 200707-06 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: XnView: Stack-based buffer overflow |
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Date: July 11, 2007 |
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Bugs: #175670 |
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ID: 200707-06 |
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Synopsis |
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======== |
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|
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XnView is vulnerable to a stack-based buffer overflow and possible |
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remote code execution when handling XPM image files. |
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Background |
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========== |
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|
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XnView is software to view and convert graphics files. XPixMap (XPM) is |
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a simple ascii-based graphics format. |
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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-misc/xnview < 1.70 Vulnerable! |
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------------------------------------------------------------------- |
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# Package 1 only applies to x86 users. |
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------------------------------------------------------------------- |
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NOTE: Certain packages are still vulnerable. Users should migrate |
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to another package if one is available or wait for the |
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existing packages to be marked stable by their |
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architecture maintainers. |
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|
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Description |
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=========== |
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|
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XnView is vulnerable to a stack-based buffer overflow while processing |
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an XPM file with an overly long section string (greater than 1024 |
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bytes). |
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|
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Impact |
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====== |
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|
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An attacker could entice a user to view a specially crafted XPM file |
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with XnView that could trigger the vulnerability and possibly execute |
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arbitrary code with the rights of the user running XnView. |
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|
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Workaround |
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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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No update appears to be forthcoming from the XnView developer and |
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XnView is proprietary, so the XnView package has been masked in |
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Portage. We recommend that users select an alternate graphics viewer |
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and conversion utility, and unmerge XnView: |
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|
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# emerge --unmerge xnview |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-2194 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2194 |
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|
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Availability |
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============ |
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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-200707-06.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 2007 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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http://creativecommons.org/licenses/by-sa/2.5 |
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