| <?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> |