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Gentoo alert 200508-16 (tor)

From:  Sune Kloppenborg Jeppesen <jaervosz@gentoo.org>
To:  gentoo-announce@lists.gentoo.org
Subject:  [gentoo-announce] [ GLSA 200508-16 ] Tor: Information disclosure
Date:  Thu, 25 Aug 2005 07:14:03 +0200
Cc:  bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk, security-alerts@linuxsecurity.com

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200508-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: Tor: Information disclosure Date: August 25, 2005 Bugs: #102245 ID: 200508-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A flaw in Tor leads to the disclosure of information and the loss of anonymity, integrity and confidentiality. Background ========== Tor is an implementation of second generation Onion Routing, a connection-oriented anonymizing communication service. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/tor < 0.1.0.14 >= 0.1.0.14 Description =========== The Diffie-Hellman implementation of Tor fails to verify the cryptographic strength of keys which are used during handshakes. Impact ====== By setting up a malicious Tor server and enticing users to use this server as first hop, a remote attacker could read and modify all traffic of the user. Workaround ========== There is no known workaround at this time. Resolution ========== All Tor users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/tor-0.1.0.14" References ========== [ 1 ] CAN-2005-2643 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-200... [ 2 ] Tor Security Announcement http://archives.seul.org/or/announce/Aug-2005/msg00002.html Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200508-16.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.0


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