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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200504-11">
<title>JunkBuster: Multiple vulnerabilities</title>
JunkBuster is vulnerable to a heap corruption vulnerability, and under
certain configurations may allow an attacker to modify settings.
<product type="ebuild">junkbuster</product>
<announced>April 13, 2005</announced>
<revised>April 21, 2005: 02</revised>
<package name="net-proxy/junkbuster" auto="yes" arch="*">
<unaffected range="ge">2.0.2-r3</unaffected>
<vulnerable range="lt">2.0.2-r3</vulnerable>
JunkBuster is a filtering HTTP proxy, designed to enhance privacy and
remove unwanted content.
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
<impact type="high">
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.
There is no known workaround at this time.
All JunkBuster users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-proxy/junkbuster-2.0.2-r3&quot;</code>
<uri link="">CAN-2005-1108</uri>
<uri link="">CAN-2005-1109</uri>
<metadata tag="requester" timestamp="Tue, 12 Apr 2005 20:24:12 +0000">
<metadata tag="submitter" timestamp="Tue, 12 Apr 2005 21:28:36 +0000">
<metadata tag="bugReady" timestamp="Wed, 13 Apr 2005 08:43:25 +0000">