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Gentoo Linux Security Advisory GLSA 200702-12 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: CHMlib: User-assisted remote execution of arbitrary code |
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Date: February 27, 2007 |
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Bugs: #163989 |
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ID: 200702-12 |
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Synopsis |
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======== |
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|
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A memory corruption vulnerability in CHMlib could lead to the remote |
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execution of arbitrary code. |
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Background |
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========== |
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|
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CHMlib is a library for the MS CHM (Compressed HTML) file format plus |
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extracting and HTTP server utils. |
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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 app-doc/chmlib < 0.39 >= 0.39 |
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|
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Description |
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=========== |
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|
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When certain CHM files that contain tables and objects stored in pages |
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are parsed by CHMlib, an unsanitized value is passed to the alloca() |
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function resulting in a shift of the stack pointer to arbitrary memory |
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locations. |
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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 open a specially crafted CHM file, |
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resulting in the execution of arbitrary code with the permissions of |
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the user viewing the file. |
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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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All CHMlib users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-doc/chmlib-0.39" |
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|
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References |
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========== |
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|
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[ 1 ] Original Advisory |
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http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=468 |
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[ 2 ] CVE-2007-0619 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0619 |
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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-200702-12.xml |
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|
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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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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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