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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200706-05">
<title>ClamAV: Multiple Denials of Service</title>
<synopsis>
ClamAV contains several vulnerabilities leading to a Denial of Service.
</synopsis>
<product type="ebuild">clamav</product>
<announced>June 15, 2007</announced>
<revised>June 15, 2007: 01</revised>
<bug>178082</bug>
<access>remote, local</access>
<affected>
<package name="app-antivirus/clamav" auto="yes" arch="*">
<unaffected range="ge">0.90.3</unaffected>
<vulnerable range="lt">0.90.3</vulnerable>
</package>
</affected>
<background>
<p>
ClamAV is a GPL virus scanner.
</p>
</background>
<description>
<p>
Several vulnerabilities were discovered in ClamAV by various
researchers:
</p>
<ul><li>Victor Stinner (INL) discovered that the OLE2
parser may enter in an infinite loop (CVE-2007-2650).</li>
<li>A
boundary error was also reported by an anonymous researcher in the file
unsp.c, which might lead to a buffer overflow (CVE-2007-3023).</li>
<li>The file unrar.c contains a heap-based buffer overflow via a
modified vm_codesize value from a RAR file (CVE-2007-3123).</li>
<li>The RAR parsing engine can be bypassed via a RAR file with a header
flag value of 10 (CVE-2007-3122).</li>
<li>The cli_gentempstream()
function from clamdscan creates temporary files with insecure
permissions (CVE-2007-3024).</li>
</ul>
</description>
<impact type="normal">
<p>
A remote attacker could send a specially crafted file to the scanner,
possibly triggering one of the vulnerabilities. The two buffer
overflows are reported to only cause Denial of Service. This would lead
to a Denial of Service by CPU consumption or a crash of the scanner.
The insecure temporary file creation vulnerability could be used by a
local user to access sensitive data.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All ClamAV users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.90.3"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2650">CVE-2007-2650</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3023">CVE-2007-3023</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3024">CVE-2007-3024</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3122">CVE-2007-3122</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3123">CVE-2007-3123</uri>
</references>
<metadata tag="requester" timestamp="Fri, 08 Jun 2007 06:17:07 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Sun, 10 Jun 2007 18:13:18 +0000">
falco
</metadata>
<metadata tag="bugReady" timestamp="Sun, 10 Jun 2007 18:15:09 +0000">
falco
</metadata>
</glsa>
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