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88 lines
3.3 KiB
88 lines
3.3 KiB
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200905-01">
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<title>Asterisk: Multiple vulnerabilities</title>
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<synopsis>
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Multiple vulnerabilities have been found in Asterisk allowing for Denial of
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Service and username disclosure.
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</synopsis>
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<product type="ebuild">asterisk</product>
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<announced>May 02, 2009</announced>
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<revised>May 02, 2009: 01</revised>
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<bug>218966</bug>
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<bug>224835</bug>
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<bug>232696</bug>
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<bug>232698</bug>
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<bug>237476</bug>
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<bug>250748</bug>
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<bug>254304</bug>
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<access>remote</access>
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<affected>
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<package name="net-misc/asterisk" auto="yes" arch="*">
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<unaffected range="ge">1.2.32</unaffected>
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<vulnerable range="lt">1.2.32</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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Asterisk is an open source telephony engine and toolkit.
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</p>
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</background>
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<description>
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<p>
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Multiple vulnerabilities have been discovered in the IAX2 channel
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driver when performing the 3-way handshake (CVE-2008-1897), when
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handling a large number of POKE requests (CVE-2008-3263), when handling
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authentication attempts (CVE-2008-5558) and when handling firmware
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download (FWDOWNL) requests (CVE-2008-3264). Asterisk does also not
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correctly handle SIP INVITE messages that lack a "From" header
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(CVE-2008-2119), and responds differently to a failed login attempt
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depending on whether the user account exists (CVE-2008-3903,
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CVE-2009-0041).
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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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Remote unauthenticated attackers could send specially crafted data to
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Asterisk, possibly resulting in a Denial of Service via a daemon crash,
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call-number exhaustion, CPU or traffic consumption. Remote
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unauthenticated attackers could furthermore enumerate valid usernames
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to facilitate brute force login attempts.
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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 Asterisk 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-misc/asterisk-1.2.32"</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-2008-1897">CVE-2008-1897</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2119">CVE-2008-2119</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3263">CVE-2008-3263</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3264">CVE-2008-3264</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3903">CVE-2008-3903</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5558">CVE-2008-5558</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0041">CVE-2009-0041</uri>
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</references>
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<metadata tag="requester" timestamp="Thu, 02 Apr 2009 12:17:04 +0000">
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rbu
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</metadata>
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<metadata tag="submitter" timestamp="Thu, 02 Apr 2009 12:31:27 +0000">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="Thu, 02 Apr 2009 12:32:59 +0000">
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rbu
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</metadata>
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</glsa>
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