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74 lines
2.4 KiB
74 lines
2.4 KiB
13 years ago
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<?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="200510-11">
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<title>OpenSSL: SSL 2.0 protocol rollback</title>
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<synopsis>
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When using a specific option, OpenSSL can be forced to fallback to the less
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secure SSL 2.0 protocol.
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</synopsis>
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<product type="ebuild">OpenSSL</product>
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<announced>October 12, 2005</announced>
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<revised>November 07, 2005: 02</revised>
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<bug>108852</bug>
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<access>remote</access>
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<affected>
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<package name="dev-libs/openssl" auto="yes" arch="*">
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<unaffected range="ge">0.9.7h</unaffected>
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<unaffected range="rge">0.9.7g-r1</unaffected>
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<unaffected range="rge">0.9.7e-r2</unaffected>
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<vulnerable range="lt">0.9.7h</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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OpenSSL is a toolkit implementing the Secure Sockets Layer, Transport
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Layer Security protocols and a general-purpose cryptography library.
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</p>
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</background>
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<description>
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<p>
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Applications setting the SSL_OP_MSIE_SSLV2_RSA_PADDING option (or the
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SSL_OP_ALL option, that implies it) can be forced by a third-party to
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fallback to the less secure SSL 2.0 protocol, even if both parties
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support the more secure SSL 3.0 or TLS 1.0 protocols.
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</p>
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</description>
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<impact type="low">
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<p>
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A man-in-the-middle attacker can weaken the encryption used to
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communicate between two parties, potentially revealing sensitive
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information.
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</p>
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</impact>
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<workaround>
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<p>
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If possible, disable the use of SSL 2.0 in all OpenSSL-enabled
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applications.
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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 OpenSSL 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 dev-libs/openssl</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=CAN-2005-2969">CAN-2005-2969</uri>
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<uri link="http://www.openssl.org/news/secadv_20051011.txt ">OpenSSL security advisory</uri>
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</references>
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<metadata tag="requester" timestamp="Tue, 11 Oct 2005 07:50:27 +0000">
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koon
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</metadata>
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<metadata tag="submitter" timestamp="Tue, 11 Oct 2005 08:03:33 +0000">
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koon
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</metadata>
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<metadata tag="bugReady" timestamp="Wed, 12 Oct 2005 07:47:42 +0000">
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koon
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</metadata>
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</glsa>
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