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Date: Wed, 10 Apr 2013 17:28:00 +0200 From: security@...driva.com To: full-disclosure@...ts.grok.org.uk Subject: [ MDVSA-2013:132 ] tor -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 _______________________________________________________________________ Mandriva Linux Security Advisory MDVSA-2013:132 http://www.mandriva.com/en/support/security/ _______________________________________________________________________ Package : tor Date : April 10, 2013 Affected: Business Server 1.0 _______________________________________________________________________ Problem 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). Denial of Service vulnerability in Tor before 0.2.3.25, due to an error when handling SENDME cells and can be exploited to cause excessive consumption of memory resources within an entry node (SA51329, CVE-2012-5573). The version of Tor shipped in MBS1 did not have correctly formed systemd unit and thus failed to start. This updated version corrects this problem and restores working behaviour. _______________________________________________________________________ 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 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5573 https://wiki.mageia.org/en/Support/Advisories/MGAA-2012-0184 https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0276 https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0356 _______________________________________________________________________ Updated Packages: Mandriva Business Server 1/X86_64: 8cadc920e4452cd2a3551a3cb01d9fcf mbs1/x86_64/tor-0.2.2.39-1.mbs1.x86_64.rpm 7cbba7170bc4f9e6ee8409398437570c mbs1/SRPMS/tor-0.2.2.39-1.mbs1.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/en/support/security/advisories/ If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iD8DBQFRZVsDmqjQ0CJFipgRAm9IAJ9tYUVrI7u2V+7yJGNLn2OVMdOzcACgyrhf PUIroe88x4NDpj7AUyd2YP8= =x4YG -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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