76 lines
2.4 KiB
XML
76 lines
2.4 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="200809-09">
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<title>Postfix: Denial of Service</title>
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<synopsis>
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A memory leak in Postfix might allow local users to cause a Denial of
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Service.
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</synopsis>
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<product type="ebuild">postfix</product>
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<announced>September 19, 2008</announced>
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<revised>September 19, 2008: 01</revised>
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<bug>236453</bug>
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<access>local</access>
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<affected>
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<package name="mail-mta/postfix" auto="yes" arch="*">
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<unaffected range="ge">2.4.9</unaffected>
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<unaffected range="ge">2.5.5</unaffected>
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<vulnerable range="lt">2.4.9</vulnerable>
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<vulnerable range="lt">2.5.5</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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Postfix is Wietse Venema's mailer that attempts to be fast, easy to
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administer, and secure, as an alternative to the widely-used Sendmail
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program.
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</p>
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</background>
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<description>
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<p>
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It has been discovered than Postfix leaks an epoll file descriptor when
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executing external commands, e.g. user-controlled $HOME/.forward or
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$HOME/.procmailrc files. NOTE: This vulnerability only concerns Postfix
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instances running on Linux 2.6 kernels.
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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 local attacker could exploit this vulnerability to reduce the
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performance of Postfix, and possibly trigger an assertion, resulting in
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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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Allow only trusted users to control delivery to non-Postfix commands.
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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 Postfix 2.4 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 ">=mail-mta/postfix-2.4.9"</code>
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<p>
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All Postfix 2.5 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 ">=mail-mta/postfix-2.5.5"</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-2008-3889">CVE-2008-3889</uri>
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</references>
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<metadata tag="requester" timestamp="Wed, 03 Sep 2008 20:58:07 +0000">
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keytoaster
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</metadata>
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<metadata tag="submitter" timestamp="Mon, 08 Sep 2008 18:33:40 +0000">
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p-y
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 08 Sep 2008 18:33:49 +0000">
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p-y
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</metadata>
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</glsa>
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