-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Multiple Vulnerabilities in Asterisk 1.2.10 [MU-200608-01] August 23, 2006 http://labs.musecurity.com/advisories.html Affected Product/Versions: Asterisk 1.0.0 through 1.2.10 Product Overview: http://www.asterisk.org/features "Asterisk-based telephony solutions offer a rich and flexible feature set. Asterisk offers both classical PBX functionality and advanced features, and interoperates with traditional standards-based telephony systems and Voice over IP systems. Asterisk offers the features one would expect of a large proprietary PBX system such as Voicemail, Conference Bridging, Call Queuing, and Call Detail Records." Vulnerability Details: A remote stack buffer overflow condition in Asterisk's MGCP implementation could allow for arbitrary code execution. The vulnerable code is triggered with the use of a malformed AUEP (audit endpoint) response message. A second issue exists in the handling of file names sent to the Record() application which could lead to arbitrary code execution via a format string attack or arbitrary file-overwrite via directory traversal techniques. The impact of this vulnerability is minimal, however, as it requires an administrator to use a client-controlled variable as part of the filename. Solution: Mu Security would like to thank the Asterisk security team for their timely response to these issues. A patch for the buffer overflow is available from the following link: http://ftp.digium.com/pub/asterisk/asterisk-1.2.11-patch.gz To protect against the Record() vulnerability, do not use user-controlled variables ( eg, ${CALLERIDNAME} ) as part of the the filename argument. History: 08/10/06 - First contact with vendor 08/16/06 - Vendor acknowledges vulnerability 08/23/06 - Advisory released Credit: These vulnerabilities were discovered by the Mu Security research team. http://labs.musecurity.com/pgpkkey.txt Mu Security offers a new class of security analysis system, delivering a rigorous and streamlined methodology for verifying the robustness and security readiness of any IP-based product or application. Founded by the pioneers of intrusion detection and prevention technology, Mu Security is backed by preeminent venture capital firms that include Accel Partners, Benchmark Capital and DAG Ventures. The company is headquartered in Sunnyvale, CA. For more information, visit the companys website at http://www.musecurity.com. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (Darwin) iD8DBQFE7JuPMl+docYeP+YRAg7aAJ978dkk09dDG2P/CNRJkk3gWcMSAQCfXud0 ActeX5hrO9+B9rJzefxRkis= =OXvK -----END PGP SIGNATURE-----
*** This bug has been marked as a duplicate of 144941 ***
