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| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200708-03"> |
| <title>libarchive (formerly named as bsdtar): Multiple PaX Extension Header Vulnerabilities</title> |
| <synopsis> |
| Multiple vulnerabilities were found in libarchive (formerly named as |
| app-archive/bsdtar), possibly allowing for the execution of arbitrary code |
| or a Denial of Service. |
| </synopsis> |
| <product type="ebuild">libarchive</product> |
| <announced>August 08, 2007</announced> |
| <revised>August 08, 2007: 02</revised> |
| <bug>184984</bug> |
| <access>remote</access> |
| <affected> |
| <package name="app-arch/libarchive" auto="yes" arch="*"> |
| <unaffected range="ge">2.2.4</unaffected> |
| <vulnerable range="lt">2.2.4</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| libarchive is a library for manipulating different streaming archive |
| formats, including certain tar variants, several cpio formats, and both |
| BSD and GNU ar variants. |
| </p> |
| </background> |
| <description> |
| <p> |
| CPNI, CERT-FI, Tim Kientzle, and Colin Percival reported a buffer |
| overflow (CVE-2007-3641), an infinite loop (CVE-2007-3644), and a NULL |
| pointer dereference (CVE-2007-3645) within the processing of archives |
| having corrupted PaX extension headers. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| An attacker can trick a user or automated system to process an archive |
| with malformed PaX extension headers into execute arbitrary code, crash |
| an application using the library, or cause a high CPU load. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| There is no known workaround at this time. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All libarchive or bsdtar users should upgrade to the latest libarchive |
| version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=app-arch/libarchive-2.2.4"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3641">CVE-2007-3641</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3644">CVE-2007-3644</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3645">CVE-2007-3645</uri> |
| </references> |
| <metadata tag="requester" timestamp="Sun, 15 Jul 2007 10:30:41 +0000"> |
| jaervosz |
| </metadata> |
| <metadata tag="submitter" timestamp="Sun, 15 Jul 2007 19:19:38 +0000"> |
| DerCorny |
| </metadata> |
| <metadata tag="bugReady" timestamp="Tue, 17 Jul 2007 17:56:39 +0000"> |
| jaervosz |
| </metadata> |
| </glsa> |