glsa-201202-03.xml


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49

<?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>2012-02-22</announced>
  <revised count="1">2012-02-22</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 "&gt;=net-dns/maradns-1.4.09"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0024">CVE-2012-0024</uri>
  </references>
  <metadata timestamp="2012-02-20T21:36:13Z" tag="requester">ackle</metadata>
  <metadata timestamp="2012-02-22T19:45:52Z" tag="submitter">ackle</metadata>
</glsa>