| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200703-03"> |
| <title>ClamAV: Denial of Service</title> |
| <synopsis> |
| ClamAV contains two vulnerabilities allowing a Denial of Service. |
| </synopsis> |
| <product type="ebuild">clamav</product> |
| <announced>March 02, 2007</announced> |
| <revised>March 02, 2007: 01</revised> |
| <bug>167201</bug> |
| <access>remote</access> |
| <affected> |
| <package name="app-antivirus/clamav" auto="yes" arch="*"> |
| <unaffected range="ge">0.90</unaffected> |
| <vulnerable range="lt">0.90</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| ClamAV is a GPL virus scanner. |
| </p> |
| </background> |
| <description> |
| <p> |
| 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. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| 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. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| The first vulnerability can be prevented by refusing any file of type |
| CAB, but there is no known workaround for the second issue. |
| </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"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0897">CVE-2007-0897</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0898">CVE-2007-0898</uri> |
| </references> |
| <metadata tag="requester" timestamp="Mon, 26 Feb 2007 22:43:01 +0000"> |
| falco |
| </metadata> |
| <metadata tag="submitter" timestamp="Tue, 27 Feb 2007 13:49:10 +0000"> |
| falco |
| </metadata> |
| <metadata tag="bugReady" timestamp="Fri, 02 Mar 2007 00:24:54 +0000"> |
| falco |
| </metadata> |
| </glsa> |