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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200701-06] w3m: Format string vulnerability


Vulnerability Assessment Details

[GLSA-200701-06] w3m: Format string vulnerability

Vulnerability Assessment Summary
w3m: Format string vulnerability

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200701-06
(w3m: Format string vulnerability)


w3m in -dump or -backend mode does not correctly handle printf() format
string specifiers in the Common Name (CN) field of an X.509 SSL
certificate.

Impact

A possible hacker could entice a user to visit a malicious website that would
load a specially crafted X.509 SSL certificate containing "%n" or other
format string specifiers, possibly resulting in the execution of
arbitrary code with the rights of the user running w3m.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6772


Solution:
All w3m users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/w3m-0.5.1-r4"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2007 Michel Arboi

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