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65 lines
2.0 KiB
65 lines
2.0 KiB
<?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="200609-17">
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<title>OpenSSH: Denial of Service</title>
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<synopsis>
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A flaw in the OpenSSH daemon allows remote unauthenticated attackers to
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cause a Denial of Service.
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</synopsis>
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<product type="ebuild">openssh</product>
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<announced>September 27, 2006</announced>
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<revised>September 27, 2006: 02</revised>
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<bug>148228</bug>
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<access>remote</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">4.3_p2-r5</unaffected>
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<vulnerable range="lt">4.3_p2-r5</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 free suite of applications for the SSH protocol, developed
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and maintained by the OpenBSD project.
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</p>
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</background>
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<description>
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<p>
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Tavis Ormandy of the Google Security Team discovered a Denial of
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Service vulnerability in the SSH protocol version 1 CRC compensation
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attack detector.
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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 unauthenticated attacker may be able to trigger excessive CPU
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usage by sending a pathological SSH message, denying service to other
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legitimate users or processes.
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</p>
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</impact>
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<workaround>
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<p>
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The system administrator may disable SSH protocol version 1 in
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/etc/ssh/sshd_config.
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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-4.3_p2-r5"</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-2006-4924">CVE-2006-4924</uri>
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</references>
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<metadata tag="submitter" timestamp="Thu, 21 Sep 2006 22:24:46 +0000">
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taviso
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</metadata>
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<metadata tag="bugReady" timestamp="Wed, 27 Sep 2006 16:06:09 +0000">
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vorlon078
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</metadata>
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</glsa>
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