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