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Mageia alert MGASA-2012-0276 (tor)
MGASA-2012-0276 Date: September 30th, 2012 Affected releases: 1, 2 Description: Updated tor package fixes security vulnerabilities: Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected (CVE-2011-2768). Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values (CVE-2011-2769). Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests (CVE-2012-3517). The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted (1) vote document or (2) consensus document (CVE-2012-3518). routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen, which might allow remote attackers to obtain sensitive information about relay selection via a timing side-channel attack (CVE-2012-3519). The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison (CVE-2012-4419). Tor before 0.2.2.39, when waiting for a client to renegotiate, allowed it to add bytes to the input buffer, allowing a crash to be caused remotely (tor-5934, tor-6007). Updated Packages: Mageia 1: tor-0.2.2.39-1.mga1 Mageia 2: tor-0.2.2.39-2.mga2 References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2768 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2769 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3517 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3518 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3519 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4419 https://blog.torproject.org/blog/tor-02234-released-secur... https://trac.torproject.org/projects/tor/ticket/5934 https://trac.torproject.org/projects/tor/ticket/6007 https://blog.torproject.org/blog/new-bundles-security-rel... http://www.debian.org/security/2011/dsa-2331 http://lists.opensuse.org/opensuse-updates/2012-08/msg000... http://www.debian.org/security/2012/dsa-2548 https://bugs.mageia.org/show_bug.cgi?id=5351 https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-... (Log in to post comments)
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