Home / mailings [gentoo-announce] [ GLSA 200711-13 ] 3proxy: Denial of Service
Posted on 08 November 2007
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Gentoo Linux Security Advisory GLSA 200711-13
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http://security.gentoo.org/
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Severity: Normal
Title: 3proxy: Denial of Service
Date: November 08, 2007
Bugs: #196772
ID: 200711-13
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Synopsis
========
A vulnerability has been discovered in 3proxy, possibly resulting in a
Denial of Service.
Background
==========
3proxy is a really tiny cross-platform proxy servers set, including
HTTP, HTTPS, FTP, SOCKS and POP3 support.
Affected packages
=================
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Package / Vulnerable / Unaffected
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1 net-proxy/3proxy < 0.5.3j >= 0.5.3j
Description
===========
3proxy contains a double free vulnerability in the ftpprchild()
function, which frees param->hostname and calls the parsehostname()
function, which in turn attempts to free param->hostname again.
Impact
======
A remote attacker could send a specially crafted request to the proxy,
possibly resulting in a Denial of Service. Under typical configuration,
the scope of this vulnerability is limited to the local network.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All 3proxy users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-proxy/3proxy-0.5.3j"
References
==========
[ 1 ] CVE-2007-5622
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5622
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200711-13.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
