| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200709-14"> |
| <title>ClamAV: Multiple vulnerabilities</title> |
| <synopsis> |
| Vulnerabilities have been discovered in ClamAV allowing remote execution of |
| arbitrary code and Denial of Service attacks. |
| </synopsis> |
| <product type="ebuild">clamav</product> |
| <announced>September 20, 2007</announced> |
| <revised>September 20, 2007: 01</revised> |
| <bug>189912</bug> |
| <access>remote</access> |
| <affected> |
| <package name="app-antivirus/clamav" auto="yes" arch="*"> |
| <unaffected range="ge">0.91.2</unaffected> |
| <vulnerable range="lt">0.91.2</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, |
| designed especially for e-mail scanning on mail gateways. |
| </p> |
| </background> |
| <description> |
| <p> |
| Nikolaos Rangos discovered a vulnerability in ClamAV which exists |
| because the recipient address extracted from email messages is not |
| properly sanitized before being used in a call to "popen()" when |
| executing sendmail (CVE-2007-4560). Also, NULL-pointer dereference |
| errors exist within the "cli_scanrtf()" function in libclamav/rtf.c and |
| Stefanos Stamatis discovered a NULL-pointer dereference vulnerability |
| within the "cli_html_normalise()" function in libclamav/htmlnorm.c |
| (CVE-2007-4510). |
| </p> |
| </description> |
| <impact type="high"> |
| <p> |
| The unsanitized recipient address can be exploited to execute arbitrary |
| code with the privileges of the clamav-milter process by sending an |
| email with a specially crafted recipient address to the affected |
| system. Also, the NULL-pointer dereference errors can be exploited to |
| crash ClamAV. Successful exploitation of the latter vulnerability |
| requires that clamav-milter is started with the "black hole" mode |
| activated, which is not enabled by default. |
| </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-0.91.2"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4510">CVE-2007-4510</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4560">CVE-2007-4560</uri> |
| </references> |
| <metadata tag="submitter" timestamp="Fri, 14 Sep 2007 22:57:24 +0000"> |
| mfleming |
| </metadata> |
| <metadata tag="bugReady" timestamp="Sat, 15 Sep 2007 12:07:22 +0000"> |
| p-y |
| </metadata> |
| </glsa> |