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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200511-23] chmlib, KchmViewer: Stack-based buffer overflow


Vulnerability Assessment Details

[GLSA-200511-23] chmlib, KchmViewer: Stack-based buffer overflow

Vulnerability Assessment Summary
chmlib, KchmViewer: Stack-based buffer overflow

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200511-23
(chmlib, KchmViewer: Stack-based buffer overflow)


Sven Tantau reported about a buffer overflow vulnerability in
chmlib. The function "_chm_decompress_block()" does not properly
perform boundary checking, resulting in a stack-based buffer overflow.

Impact

By convincing a user to open a specially crafted ITSS or CHM file,
using KchmViewer or a program makes use of chmlib, a remote attacker
could execute arbitrary code with the rights of the user running
the software.

Workaround

There is no known workaround at this time.

References:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3318


Solution:
All chmlib users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-doc/chmlib-0.37.4"
All KchmViewer users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-doc/kchmviewer-1.1"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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