Fedora 9 Advisory: 2009-0897 Critical Fix for Tor 0.2.0.33 Heap Corruption

Tor is a connection-based low-latency anonymous communication system.

Applications connect to the local Tor proxy using the SOCKS protocol. The

local proxy chooses a path through a set of relays, in which each relay

knows its predecessor and successor, but no others. Traffic flowing down

the circuit is unwrapped by a symmetric key at each relay, which reveals

the downstream relay.

Warnings: Tor does no protocol cleaning. That means there is a danger

that application protocols and associated programs can be induced to

reveal information about the initiator. Tor depends on Privoxy and

similar protocol cleaners to solve this problem. This is alpha code,

and is even more likely than released code to have anonymity-spoiling

bugs. The present network is very small -- this further reduces the

strength of the anonymity provided. Tor is not presently suitable for

high-stakes anonymity.

New upstream release 0.2.0.33, with lots of bug fixes and one security fix:

* Thu Jan 22 2009 Enrico Scholz - 0.2.0.33-1

- updated to 0.2.0.33 (SECURITY: fixed heap-corruption bug)

* Sun Dec 7 2008 Enrico Scholz - 0.2.0.32-1

- updated to 0.2.0.32

- removed -setgroups patch; supplementary groups are now set upstream

* Sun Jul 20 2008 Enrico Scholz - 0.2.0.30-1

- updated to 0.2.0.30; rediffed patches

- (re)enabled transparent proxy support by workarounding broken

header

- moved the 'geoip' database to /var/lib/tor-data where it can be

updated periodically

- built with -Wl,--as-needed

[ 1 ] Bug #481289 - tor: remote heap corruption bug fixed in 0.2.0.33

https://bugzilla.redhat.com/show_bug.cgi?id=481289

su -c 'yum update tor' at the command line.

For more information, refer to "Managing Software with yum",

available at .

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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