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CVE-2012-3553

Status Candidate

Overview

chan_skinny.c in the Skinny (aka SCCP) channel driver in Asterisk Open Source 10.x before 10.5.1 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) by sending a Station Key Pad Button message and closing a connection in off-hook mode, a related issue to CVE-2012-2948.

Related Files

Asterisk Project Security Advisory - AST-2012-009
Posted Jun 14, 2012
Authored by Matt Jordan, Christoph Hebeisen | Site asterisk.org

Asterisk Project Security Advisory - AST-2012-008 previously dealt with a denial of service attack exploitable in the Skinny channel driver that occurred when certain messages are sent after a previously registered station sends an Off Hook message. Unresolved in that patch is an issue in the Asterisk 10 releases, wherein, if a Station Key Pad Button Message is processed after an Off Hook message, the channel driver will inappropriately dereference a Null pointer. Similar to AST-2012-008, a remote attacker with a valid SCCP ID can can use this vulnerability by closing a connection to the Asterisk server when a station is in the "Off Hook" call state and crash the server.

tags | advisory, remote, denial of service
advisories | CVE-2012-3553
MD5 | 0559bf1eaeb33a2104fd097035bfaeb6
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