71 lines
2.4 KiB
XML
71 lines
2.4 KiB
XML
<?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="200909-01">
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<title>Linux-PAM: Privilege escalation</title>
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<synopsis>
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An error in the handling of user names of Linux-PAM might allow remote
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attackers to cause a Denial of Service or escalate privileges.
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</synopsis>
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<product type="ebuild">pam</product>
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<announced>September 07, 2009</announced>
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<revised>September 07, 2009: 01</revised>
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<bug>261512</bug>
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<access>remote</access>
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<affected>
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<package name="sys-libs/pam" auto="yes" arch="*">
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<unaffected range="ge">1.0.4</unaffected>
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<vulnerable range="lt">1.0.4</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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Linux-PAM (Pluggable Authentication Modules) is an architecture
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allowing the separation of the development of privilege granting
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software from the development of secure and appropriate authentication
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schemes.
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</p>
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</background>
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<description>
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<p>
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Marcus Granado repoted that Linux-PAM does not properly handle user
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names that contain Unicode characters. This is related to integer
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signedness errors in the pam_StrTok() function in libpam/pam_misc.c.
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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 exploit this vulnerability to cause a Denial of
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Service. A remote authenticated attacker could exploit this
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vulnerability to log in to a system with the account of a user that has
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a similar user name, but with non-ASCII characters.
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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 Linux-PAM 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 ">=sys-libs/pam-1.0.4"</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-2009-0887">CVE-2009-0887</uri>
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</references>
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<metadata tag="requester" timestamp="Fri, 10 Jul 2009 18:01:34 +0000">
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craig
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</metadata>
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<metadata tag="submitter" timestamp="Fri, 28 Aug 2009 16:33:27 +0000">
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a3li
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 31 Aug 2009 03:38:46 +0000">
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a3li
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</metadata>
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</glsa>
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