70 lines
2.5 KiB
XML
70 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="200408-19">
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<title>courier-imap: Remote Format String Vulnerability</title>
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<synopsis>
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There is a format string vulnerability in non-standard configurations of
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courier-imapd which may be exploited remotely. An attacker may be able to
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execute arbitrary code as the user running courier-imapd (oftentimes root).
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</synopsis>
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<product type="ebuild">courier-imap</product>
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<announced>2004-08-19</announced>
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<revised count="02">2006-05-22</revised>
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<bug>60865</bug>
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<access>remote</access>
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<affected>
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<package name="net-mail/courier-imap" auto="yes" arch="*">
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<unaffected range="ge">3.0.5</unaffected>
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<vulnerable range="le">3.0.2-r1</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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Courier-IMAP is an IMAP server which is part of the Courier mail
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system. It provides access only to maildirs.
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</p>
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</background>
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<description>
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<p>
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There is a format string vulnerability in the auth_debug() function
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which can be exploited remotely, potentially leading to arbitrary code
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execution as the user running the IMAP daemon (oftentimes root). A
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remote attacker may send username or password information containing
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printf() format tokens (such as "%s"), which will crash the server or
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cause it to execute arbitrary code.
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</p>
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<p>
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This vulnerability can only be exploited if DEBUG_LOGIN is set to
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something other than 0 in the imapd config file.
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</p>
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</description>
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<impact type="high">
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<p>
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If DEBUG_LOGIN is enabled in the imapd configuration, a remote attacker
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may execute arbitrary code as the root user.
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</p>
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</impact>
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<workaround>
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<p>
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Set the DEBUG_LOGIN option in /etc/courier-imap/imapd to 0. (This is
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the default value.)
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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 courier-imap 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 -pv ">=net-mail/courier-imap-3.0.5"
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# emerge ">=net-mail/courier-imap-3.0.5"</code>
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</resolution>
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<references>
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<uri link="http://www.idefense.com/application/poi/display?id=131&type=vulnerabilities&flashstatus=true">iDEFENSE Advisory</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0777">CVE-2004-0777</uri>
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</references>
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<metadata tag="submitter" timestamp="2004-08-19T18:47:27Z">
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condordes
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</metadata>
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</glsa>
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