78 lines
2.7 KiB
XML
78 lines
2.7 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="200804-03">
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<title>OpenSSH: Privilege escalation</title>
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<synopsis>
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Two flaws have been discovered in OpenSSH which could allow local attackers
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to escalate their privileges.
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</synopsis>
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<product type="ebuild">openssh</product>
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<announced>2008-04-05</announced>
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<revised count="01">2008-04-05</revised>
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<bug>214985</bug>
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<bug>215702</bug>
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<access>local</access>
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<affected>
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<package name="net-misc/openssh" auto="yes" arch="*">
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<unaffected range="ge">4.7_p1-r6</unaffected>
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<vulnerable range="lt">4.7_p1-r6</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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OpenSSH is a complete SSH protocol implementation that includes an SFTP
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client and server support.
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</p>
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</background>
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<description>
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<p>
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Two issues have been discovered in OpenSSH:
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</p>
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<ul>
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<li>Timo Juhani
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Lindfors discovered that OpenSSH sets the DISPLAY variable in SSH
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sessions using X11 forwarding even when it cannot bind the X11 server
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to a local port in all address families (CVE-2008-1483).</li>
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<li>OpenSSH will execute the contents of the ".ssh/rc" file even when
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the "ForceCommand" directive is enabled in the global sshd_config
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(CVE-2008-1657).</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 local attacker could exploit the first vulnerability to hijack
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forwarded X11 sessions of other users and possibly execute code with
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their privileges, disclose sensitive data or cause a Denial of Service,
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by binding a local X11 server to a port using only one address family.
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The second vulnerability might allow local attackers to bypass intended
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security restrictions and execute commands other than those specified
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by "ForceCommand" if they are able to write to their home directory.
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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 OpenSSH 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/openssh-4.7_p1-r6"</code>
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</resolution>
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<references>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1483">CVE-2008-1483</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1657">CVE-2008-1657</uri>
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</references>
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<metadata tag="requester" timestamp="2008-03-31T15:53:04Z">
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rbu
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</metadata>
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<metadata tag="submitter" timestamp="2008-04-03T21:55:34Z">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="2008-04-03T22:39:55Z">
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rbu
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</metadata>
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</glsa>
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