<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200504-11"> <title>JunkBuster: Multiple vulnerabilities</title> <synopsis> JunkBuster is vulnerable to a heap corruption vulnerability, and under certain configurations may allow an attacker to modify settings. </synopsis> <product type="ebuild">junkbuster</product> <announced>2005-04-13</announced> <revised count="02">2005-04-21</revised> <bug>88537</bug> <access>remote</access> <affected> <package name="net-proxy/junkbuster" auto="yes" arch="*"> <unaffected range="ge">2.0.2-r3</unaffected> <vulnerable range="lt">2.0.2-r3</vulnerable> </package> </affected> <background> <p> JunkBuster is a filtering HTTP proxy, designed to enhance privacy and remove unwanted content. </p> </background> <description> <p> James Ranson reported a vulnerability when JunkBuster is configured to run in single-threaded mode, an attacker can modify the referrer setting by getting a victim to request a specially crafted URL (CAN-2005-1108). Tavis Ormandy of the Gentoo Linux Security Audit Team identified a heap corruption issue in the filtering of URLs (CAN-2005-1109). </p> </description> <impact type="high"> <p> If JunkBuster has been configured to run in single-threaded mode, an attacker can disable or modify the filtering of Referrer: HTTP headers, potentially compromising the privacy of users. The heap corruption vulnerability could crash or disrupt the operation of the proxy, potentially executing arbitrary code. </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All JunkBuster users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-proxy/junkbuster-2.0.2-r3"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1108">CAN-2005-1108</uri> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1109">CAN-2005-1109</uri> </references> <metadata tag="requester" timestamp="2005-04-12T20:24:12Z"> jaervosz </metadata> <metadata tag="submitter" timestamp="2005-04-12T21:28:36Z"> taviso </metadata> <metadata tag="bugReady" timestamp="2005-04-13T08:43:25Z"> koon </metadata> </glsa>