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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200411-07] Proxytunnel: Format string vulnerability

Vulnerability Assessment Details

[GLSA-200411-07] Proxytunnel: Format string vulnerability
Vulnerability Assessment Summary
Proxytunnel: Format string vulnerability

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200411-07
(Proxytunnel: Format string vulnerability)


Florian Schilhabel of the Gentoo Linux Security Audit project found a
format string vulnerability in Proxytunnel. When the program is started in
daemon mode (-a [port]), it improperly logs invalid proxy answers to
syslog.

Impact

A malicious remote server could send specially-crafted invalid answers to
exploit the format string vulnerability, potentially permiting the execution
of arbitrary code on the tunnelling host with the rights of the Proxytunnel
process.

Workaround

You can mitigate the issue by only permiting connections to trusted remote
servers.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0992
http://proxytunnel.sourceforge.net/news.html


Solution:
All Proxytunnel users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/proxytunnel-1.2.3"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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