77 lines
2.5 KiB
XML
77 lines
2.5 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200809-02">
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<title>dnsmasq: Denial of Service and DNS spoofing</title>
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<synopsis>
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Two vulnerabilities in dnsmasq might allow for a Denial of Service or
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spoofing of DNS replies.
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</synopsis>
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<product type="ebuild">dnsmasq</product>
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<announced>September 04, 2008</announced>
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<revised>September 04, 2008: 01</revised>
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<bug>231282</bug>
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<bug>232523</bug>
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<access>remote</access>
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<affected>
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<package name="net-dns/dnsmasq" auto="yes" arch="*">
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<unaffected range="ge">2.45</unaffected>
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<vulnerable range="lt">2.45</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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Dnsmasq is a lightweight and easily-configurable DNS forwarder and DHCP
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server.
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</p>
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</background>
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<description>
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<ul>
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<li>
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Dan Kaminsky of IOActive reported that dnsmasq does not randomize UDP
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source ports when forwarding DNS queries to a recursing DNS server
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(CVE-2008-1447).
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</li>
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<li>
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Carlos Carvalho reported that dnsmasq in the 2.43 version does not
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properly handle clients sending inform or renewal queries for unknown
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DHCP leases, leading to a crash (CVE-2008-3350).
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</li>
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</ul>
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</description>
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<impact type="normal">
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<p>
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A remote attacker could send spoofed DNS response traffic to dnsmasq,
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possibly involving generating queries via multiple vectors, and spoof
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DNS replies, which could e.g. lead to the redirection of web or mail
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traffic to malicious sites. Furthermore, an attacker could generate
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invalid DHCP traffic and cause a Denial of Service.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All dnsmasq users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=net-dns/dnsmasq-2.45"</code>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3350">CVE-2008-3350</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447">CVE-2008-1447</uri>
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</references>
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<metadata tag="requester" timestamp="Sun, 13 Jul 2008 19:25:11 +0000">
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p-y
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</metadata>
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<metadata tag="submitter" timestamp="Tue, 19 Aug 2008 23:52:40 +0000">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="Tue, 19 Aug 2008 23:52:59 +0000">
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rbu
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</metadata>
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</glsa>
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