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76 lines
2.8 KiB
76 lines
2.8 KiB
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200709-14">
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<title>ClamAV: Multiple vulnerabilities</title>
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<synopsis>
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Vulnerabilities have been discovered in ClamAV allowing remote execution of
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arbitrary code and Denial of Service attacks.
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</synopsis>
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<product type="ebuild">clamav</product>
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<announced>September 20, 2007</announced>
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<revised>September 20, 2007: 01</revised>
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<bug>189912</bug>
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<access>remote</access>
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<affected>
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<package name="app-antivirus/clamav" auto="yes" arch="*">
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<unaffected range="ge">0.91.2</unaffected>
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<vulnerable range="lt">0.91.2</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX,
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designed especially for e-mail scanning on mail gateways.
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</p>
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</background>
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<description>
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<p>
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Nikolaos Rangos discovered a vulnerability in ClamAV which exists
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because the recipient address extracted from email messages is not
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properly sanitized before being used in a call to "popen()" when
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executing sendmail (CVE-2007-4560). Also, NULL-pointer dereference
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errors exist within the "cli_scanrtf()" function in libclamav/rtf.c and
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Stefanos Stamatis discovered a NULL-pointer dereference vulnerability
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within the "cli_html_normalise()" function in libclamav/htmlnorm.c
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(CVE-2007-4510).
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</p>
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</description>
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<impact type="high">
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<p>
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The unsanitized recipient address can be exploited to execute arbitrary
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code with the privileges of the clamav-milter process by sending an
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email with a specially crafted recipient address to the affected
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system. Also, the NULL-pointer dereference errors can be exploited to
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crash ClamAV. Successful exploitation of the latter vulnerability
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requires that clamav-milter is started with the "black hole" mode
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activated, which is not enabled by default.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All ClamAV users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.91.2"</code>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4510">CVE-2007-4510</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4560">CVE-2007-4560</uri>
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</references>
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<metadata tag="submitter" timestamp="Fri, 14 Sep 2007 22:57:24 +0000">
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mfleming
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</metadata>
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<metadata tag="bugReady" timestamp="Sat, 15 Sep 2007 12:07:22 +0000">
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p-y
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</metadata>
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</glsa>
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