OpenPKG Security Advisory (openser)

2006.12.29
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-119


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ________________________________________________________________________ ____ Publisher Name: OpenPKG GmbH Publisher Home: http://openpkg.com/ Advisory Id (public): OpenPKG-SA-2006.042 Advisory Type: OpenPKG Security Advisory (SA) Advisory Directory: http://openpkg.com/go/OpenPKG-SA Advisory Document: http://openpkg.com/go/OpenPKG-SA-2006.042 Advisory Published: 2006-12-26 12:44 UTC Issue Id (internal): OpenPKG-SI-20061226.01 Issue First Created: 2006-12-26 Issue Last Modified: 2006-12-26 Issue Revision: 11 ________________________________________________________________________ ____ Subject Name: OpenSER Subject Summary: SIP router Subject Home: http://www.openser.org/ Subject Versions: * <= 1.1.0 Vulnerability Id: BID:21706 Vulnerability Scope: global (not OpenPKG specific) Attack Feasibility: run-time Attack Vector: local system Attack Impact: arbitrary code execution Description: A buffer overflow was discovered [0] in the "parse_expression" function of the "permissions" module of the SIP router OpenSER [1], versions up to and including 1.1.0. The OpenSER "permissions" module is used to determine if a SIP call has appropriate permission to be established. The "parse_expression" function is used during parsing of the modules local allow/deny configuration files. The buffer overflow is triggered by parsing a configuration line expression consisting of more than 500 characters and potentially could lead to the execution of arbitrary code under the privileges of the OpenSER process. Successfully exploiting the vulnerability requires that the local attacker has write access to the configuration files used with the configuration functions "allow_routing", "allow_register" and "allow_refer_to". References: [0] http://www.securityfocus.com/archive/1/455097 [1] http://www.openser.org/ ________________________________________________________________________ ____ Primary Package Name: openser Primary Package Home: http://openpkg.org/go/package/openser Corrected Distribution: Corrected Branch: Corrected Package: OpenPKG Enterprise E1.0-SOLID openser-1.1.0-E1.0.1 ________________________________________________________________________ ____ For security reasons, this document was digitally signed with the OpenPGP public key of the OpenPKG GmbH (public key id 61B7AE34) which you can download from http://openpkg.com/openpkg.com.pgp or retrieve from the OpenPGP keyserver at hkp://pgp.openpkg.org/. Follow the instructions at http://openpkg.com/security/signatures/ for more details on how to verify the integrity of this document. ________________________________________________________________________ ____ -----BEGIN PGP SIGNATURE----- Comment: OpenPKG GmbH <http://openpkg.com/> iD8DBQFFkQsHZwQuyWG3rjQRApGOAKCVVCW9h1gKay9HA1isBkPhxpgxxACfWJNq jUBWsY4pWZ+WaOv7IQjnrMQ= =IyjS -----END PGP SIGNATURE-----


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