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Last updated: 9/22/2014 10:22:47 PM

CVE Publication rate: 31.03

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National Cyber Awareness System

Vulnerability Summary for CVE-2014-4045

Original release date: 06/17/2014
Last revised: 06/18/2014
Source: US-CERT/NIST

Overview

The Publish/Subscribe Framework in the PJSIP channel driver in Asterisk Open Source 12.x before 12.3.1, when sub_min_expiry is set to zero, allows remote attackers to cause a denial of service (assertion failure and crash) via an unsubscribe request when not subscribed to the device.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

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External Source: BUGTRAQ
Name: 20140612 AST-2014-005: Remote Crash in PJSIP Channel Driver's Publish/Subscribe Framework
External Source: MISC
Name: http://packetstormsecurity.com/files/127087/Asterisk-Project-Security-Advisory-AST-2014-005.html
External Source: CONFIRM
Name: http://downloads.asterisk.org/pub/security/AST-2014-005.html
Type: Advisory; Patch Information

Technical Details

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