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88 lines
3.1 KiB
88 lines
3.1 KiB
13 years ago
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<?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="201006-12">
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<title>Fetchmail: Multiple vulnerabilities</title>
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<synopsis>
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Multiple vulnerabilities have been reported in Fetchmail, allowing remote
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attackers to execute arbitrary code or to conduct Man-in-the-Middle
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attacks.
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</synopsis>
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<product type="ebuild">fetchmail</product>
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<announced>June 01, 2010</announced>
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<revised>June 01, 2010: 01</revised>
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<bug>280537</bug>
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<bug>307761</bug>
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<access>remote</access>
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<affected>
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<package name="net-mail/fetchmail" auto="yes" arch="*">
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<unaffected range="ge">6.3.14</unaffected>
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<vulnerable range="lt">6.3.14</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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Fetchmail is a remote mail retrieval and forwarding utility.
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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 reported in Fetchmail:
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</p>
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<ul>
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<li>The sdump() function might trigger a heap-based buffer overflow
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during the escaping of non-printable characters with the high bit set
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from an X.509 certificate (CVE-2010-0562).</li>
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<li>The vendor reported
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that Fetchmail does not properly handle Common Name (CN) fields in
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X.509 certificates that contain an ASCII NUL character. Specifically,
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the processing of such fields is stopped at the first occurrence of a
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NUL character. This type of vulnerability was recently discovered by
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Dan Kaminsky and Moxie Marlinspike (CVE-2009-2666).</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 entice a user to connect with Fetchmail to a
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specially crafted SSL-enabled server in verbose mode, possibly
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resulting in the execution of arbitrary code with the privileges of the
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user running the application. NOTE: The issue is only existent on
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platforms on which char is signed.
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</p>
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<p>
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Furthermore, a remote attacker might employ a specially crafted X.509
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certificate, containing a NUL character in the Common Name field to
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conduct man-in-the-middle attacks on SSL connections made using
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Fetchmail.
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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 Fetchmail 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-mail/fetchmail-6.3.14"</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-2010-0562">CVE-2010-0562</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2666">CVE-2009-2666</uri>
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</references>
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<metadata tag="requester" timestamp="Mon, 29 Mar 2010 22:13:20 +0000">
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craig
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</metadata>
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<metadata tag="submitter" timestamp="Sun, 11 Apr 2010 12:34:40 +0000">
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craig
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</metadata>
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<metadata tag="bugReady" timestamp="Thu, 27 May 2010 17:49:00 +0000">
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vorlon
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</metadata>
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</glsa>
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