68 lines
2.4 KiB
XML
68 lines
2.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
|
|
<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
|
|
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
|
|
|
|
<glsa id="200409-04">
|
|
<title>Squid: Denial of service when using NTLM authentication</title>
|
|
<synopsis>
|
|
Squid is vulnerable to a denial of service attack which could crash its
|
|
NTLM helpers.
|
|
</synopsis>
|
|
<product type="ebuild">squid</product>
|
|
<announced>September 02, 2004</announced>
|
|
<revised>December 30, 2007: 03</revised>
|
|
<bug>61280</bug>
|
|
<access>remote</access>
|
|
<affected>
|
|
<package name="net-proxy/squid" auto="yes" arch="*">
|
|
<unaffected range="ge">2.5.6-r2</unaffected>
|
|
<unaffected range="lt">2.5</unaffected>
|
|
<vulnerable range="le">2.5.6-r1</vulnerable>
|
|
</package>
|
|
</affected>
|
|
<background>
|
|
<p>
|
|
Squid is a full-featured Web Proxy Cache designed to run on Unix
|
|
systems. It supports proxying and caching of HTTP, FTP, and other URLs,
|
|
as well as SSL support, cache hierarchies, transparent caching, access
|
|
control lists and many other features.
|
|
</p>
|
|
</background>
|
|
<description>
|
|
<p>
|
|
Squid 2.5.x versions contain a bug in the functions ntlm_fetch_string()
|
|
and ntlm_get_string() which lack checking the int32_t offset "o" for
|
|
negative values.
|
|
</p>
|
|
</description>
|
|
<impact type="normal">
|
|
<p>
|
|
A remote attacker could cause a denial of service situation by sending
|
|
certain malformed NTLMSSP packets if NTLM authentication is enabled.
|
|
</p>
|
|
</impact>
|
|
<workaround>
|
|
<p>
|
|
Disable NTLM authentication by removing any "auth_param ntlm program
|
|
..." directives from squid.conf or use ntlm_auth from Samba-3.x.
|
|
</p>
|
|
</workaround>
|
|
<resolution>
|
|
<p>
|
|
All Squid users should upgrade to the latest stable version:
|
|
</p>
|
|
<code>
|
|
# emerge sync
|
|
|
|
# emerge -pv ">=net-www/squid-2.5.6-r2"
|
|
# emerge ">=net-www/squid-2.5.6-r2"</code>
|
|
</resolution>
|
|
<references>
|
|
<uri link="http://www1.uk.squid-cache.org/squid/Versions/v2/2.5/bugs/#squid-2.5.STABLE6-ntlm_fetch_string">Squid-2.5 Patches</uri>
|
|
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0832">CVE-2004-0832</uri>
|
|
</references>
|
|
<metadata tag="submitter" timestamp="Thu, 2 Sep 2004 10:25:32 +0000">
|
|
vorlon078
|
|
</metadata>
|
|
</glsa>
|