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CVE-2012-5573

Status Candidate

Overview

The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might allow remote attackers to cause a denial of service (memory consumption or excessive cell reception rate) or bypass intended flow-control restrictions via a RELAY_COMMAND_SENDME command.

Related Files

Mandriva Linux Security Advisory 2013-132
Posted Apr 11, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-132 - 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. 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. Various other vulnerabilities have been addressed.

tags | advisory, remote, vulnerability
systems | linux, mandriva
advisories | CVE-2011-2768, CVE-2011-2769, CVE-2012-3517, CVE-2012-3518, CVE-2012-3519, CVE-2012-4419, CVE-2012-5573
MD5 | 36bbb2b4a1c6d9ca9c102f36b05c7c5d
Gentoo Linux Security Advisory 201301-03
Posted Jan 9, 2013
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201301-3 - Multiple vulnerabilities have been found in Tor, allowing attackers to cause Denial of Service or obtain sensitive information. Versions less than 0.2.3.25 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2012-3517, CVE-2012-3518, CVE-2012-3519, CVE-2012-4419, CVE-2012-4922, CVE-2012-5573
MD5 | 7517b386b7608e57b16523a9503fe59e
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