| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| <glsa id="201202-03"> |
| <title>MaraDNS: Denial of Service</title> |
| <synopsis>A hash collision vulnerability in MaraDNS allows remote attackers |
| to cause a Denial of Service condition. |
| </synopsis> |
| <product type="ebuild">maradns</product> |
| <announced>February 22, 2012</announced> |
| <revised>February 22, 2012: 1</revised> |
| <bug>397431</bug> |
| <access>remote</access> |
| <affected> |
| <package name="net-dns/maradns" auto="yes" arch="*"> |
| <unaffected range="ge">1.4.09</unaffected> |
| <vulnerable range="lt">1.4.09</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p>MaraDNS is a proxy DNS server with permanent caching.</p> |
| </background> |
| <description> |
| <p>MaraDNS does not properly randomize hash functions to protect against |
| hash collision attacks. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p>A remote attacker could send many specially crafted DNS recursive |
| queries, possibly resulting in a Denial of Service condition. |
| </p> |
| </impact> |
| <workaround> |
| <p>There is no known workaround at this time.</p> |
| </workaround> |
| <resolution> |
| <p>All MaraDNS users should upgrade to the latest version:</p> |
| |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=net-dns/maradns-1.4.09" |
| </code> |
| |
| </resolution> |
| <references> |
| <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0024">CVE-2012-0024</uri> |
| </references> |
| <metadata timestamp="Mon, 20 Feb 2012 21:36:13 +0000" tag="requester">ackle</metadata> |
| <metadata timestamp="Wed, 22 Feb 2012 19:45:52 +0000" tag="submitter">ackle</metadata> |
| </glsa> |