<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200411-07"> <title>Proxytunnel: Format string vulnerability</title> <synopsis> Proxytunnel is vulnerable to a format string vulnerability, potentially allowing a remote server to execute arbitrary code with the rights of the Proxytunnel process. </synopsis> <product type="ebuild">Proxytunnel</product> <announced>2004-11-03</announced> <revised count="01">2004-11-03</revised> <bug>69379</bug> <access>remote</access> <affected> <package name="net-misc/proxytunnel" auto="yes" arch="*"> <unaffected range="ge">1.2.3</unaffected> <vulnerable range="lt">1.2.3</vulnerable> </package> </affected> <background> <p> Proxytunnel is a program that tunnels connections to a remote server through a standard HTTPS proxy. </p> </background> <description> <p> 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. </p> </description> <impact type="normal"> <p> A malicious remote server could send specially-crafted invalid answers to exploit the format string vulnerability, potentially allowing the execution of arbitrary code on the tunnelling host with the rights of the Proxytunnel process. </p> </impact> <workaround> <p> You can mitigate the issue by only allowing connections to trusted remote servers. </p> </workaround> <resolution> <p> All Proxytunnel users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/proxytunnel-1.2.3"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0992">CAN-2004-0992</uri> <uri link="https://proxytunnel.sourceforge.net/news.html">Proxytunnel News</uri> </references> <metadata tag="requester" timestamp="2004-11-02T21:56:56Z"> koon </metadata> <metadata tag="submitter" timestamp="2004-11-03T09:32:39Z"> koon </metadata> <metadata tag="bugReady" timestamp="2004-11-03T14:02:21Z"> koon </metadata> </glsa>