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78 lines
2.5 KiB
78 lines
2.5 KiB
<?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="200702-06">
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<title>BIND: Denial of Service</title>
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<synopsis>
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ISC BIND contains two vulnerabilities allowing a Denial of Service under
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certain conditions.
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</synopsis>
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<product type="ebuild">bind</product>
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<announced>2007-02-17</announced>
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<revised count="01">2007-02-17</revised>
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<bug>163692</bug>
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<access>remote</access>
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<affected>
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<package name="net-dns/bind" auto="yes" arch="*">
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<unaffected range="ge">9.3.4</unaffected>
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<unaffected range="rge">9.2.8</unaffected>
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<vulnerable range="lt">9.3.4</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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ISC BIND is the Internet Systems Consortium implementation of the
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Domain Name System (DNS) protocol.
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</p>
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</background>
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<description>
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<p>
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An unspecified improper usage of an already freed context has been
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reported. Additionally, an assertion error could be triggered in the
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DNSSEC validation of some responses to type ANY queries with multiple
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RRsets.
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</p>
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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 crash the server through unspecified vectors
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or, if DNSSEC validation is enabled, by sending certain crafted ANY
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queries.
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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 for the first issue. The
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DNSSEC validation Denial of Service can be prevented by disabling
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DNSSEC validation until the upgrade to a fixed version. Note that
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DNSSEC validation is disabled on a default configuration.
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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 ISC BIND 9.3 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/bind-9.3.4"</code>
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<p>
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All ISC BIND 9.2 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/bind-9.2.8"</code>
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</resolution>
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<references>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0493">CVE-2007-0493</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0494">CVE-2007-0494</uri>
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</references>
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<metadata tag="requester" timestamp="2007-02-16T09:07:21Z">
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falco
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</metadata>
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<metadata tag="submitter" timestamp="2007-02-16T17:39:52Z">
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falco
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</metadata>
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<metadata tag="bugReady" timestamp="2007-02-17T15:53:00Z">
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falco
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</metadata>
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</glsa>
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