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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200703-03">
<title>ClamAV: Denial of Service</title>
ClamAV contains two vulnerabilities allowing a Denial of Service.
<product type="ebuild">clamav</product>
<announced>March 02, 2007</announced>
<revised>March 02, 2007: 01</revised>
<package name="app-antivirus/clamav" auto="yes" arch="*">
<unaffected range="ge">0.90</unaffected>
<vulnerable range="lt">0.90</vulnerable>
ClamAV is a GPL virus scanner.
An anonymous researcher discovered a file descriptor leak error in the
processing of CAB archives and a lack of validation of the "id"
parameter string used to create local files when parsing MIME headers.
<impact type="normal">
A remote attacker can send several crafted CAB archives with a
zero-length record header that will fill the available file descriptors
until no other is available, which will prevent ClamAV from scanning
most archives. An attacker can also send an email with specially
crafted MIME headers to overwrite local files with the permissions of
the user running ClamAV, such as the virus database file, which could
prevent ClamAV from detecting any virus.
The first vulnerability can be prevented by refusing any file of type
CAB, but there is no known workaround for the second issue.
All ClamAV users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-antivirus/clamav-0.90&quot;</code>
<uri link="">CVE-2007-0897</uri>
<uri link="">CVE-2007-0898</uri>
<metadata tag="requester" timestamp="Mon, 26 Feb 2007 22:43:01 +0000">
<metadata tag="submitter" timestamp="Tue, 27 Feb 2007 13:49:10 +0000">
<metadata tag="bugReady" timestamp="Fri, 02 Mar 2007 00:24:54 +0000">