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authorAlex Legler <alex@a3li.li>2015-03-08 22:02:38 +0100
committerAlex Legler <alex@a3li.li>2015-03-08 22:02:38 +0100
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Import existing advisories
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+<?xml version="1.0" encoding="utf-8"?>
+<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
+<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+
+<glsa id="200909-19">
+ <title>Dnsmasq: Multiple vulnerabilities</title>
+ <synopsis>
+ Multiple vulnerabilities in Dnsmasq might result in the remote execution of
+ arbitrary code, or a Denial of Service.
+ </synopsis>
+ <product type="ebuild">dnsmasq</product>
+ <announced>September 20, 2009</announced>
+ <revised>September 20, 2009: 01</revised>
+ <bug>282653</bug>
+ <access>remote</access>
+ <affected>
+ <package name="net-dns/dnsmasq" auto="yes" arch="*">
+ <unaffected range="ge">2.5.0</unaffected>
+ <vulnerable range="lt">2.5.0</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP
+ server. It includes support for Trivial FTP (TFTP).
+ </p>
+ </background>
+ <description>
+ <p>
+ Multiple vulnerabilities have been reported in the TFTP functionality
+ included in Dnsmasq:
+ </p>
+ <ul>
+ <li>Pablo Jorge and Alberto Solino
+ discovered a heap-based buffer overflow (CVE-2009-2957).</li>
+ <li>An
+ anonymous researcher reported a NULL pointer reference
+ (CVE-2009-2958).</li>
+ </ul>
+ </description>
+ <impact type="normal">
+ <p>
+ A remote attacker in the local network could exploit these
+ vulnerabilities by sending specially crafted TFTP requests to a machine
+ running Dnsmasq, possibly resulting in the remote execution of
+ arbitrary code with the privileges of the user running the daemon, or a
+ Denial of Service. NOTE: The TFTP server is not enabled by default.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ You can disable the TFTP server either at buildtime by not enabling the
+ "tftp" USE flag, or at runtime. Make sure "--enable-tftp" is not set in
+ the DNSMASQ_OPTS variable in the /etc/conf.d/dnsmasq file and
+ "enable-tftp" is not set in /etc/dnsmasq.conf, either of which would
+ enable TFTP support if it is compiled in.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ All Dnsmasq users should upgrade to the latest version:
+ </p>
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose &quot;&gt;=net-dns/dnsmasq-2.5.0&quot;</code>
+ </resolution>
+ <references>
+ <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2957">CVE-2009-2957</uri>
+ <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2958">CVE-2009-2958</uri>
+ </references>
+ <metadata tag="submitter" timestamp="Tue, 01 Sep 2009 10:28:12 +0000">
+ a3li
+ </metadata>
+ <metadata tag="bugReady" timestamp="Sun, 20 Sep 2009 18:56:49 +0000">
+ a3li
+ </metadata>
+</glsa>