Test ID:	1.3.6.1.4.1.25623.1.0.106174
Category:	Denial of Service
Title:	Asterisk Long Contact URIs DoS Vulnerability (AST-2016-004)
Summary:	Asterisk is prone to a denial of service vulnerability.
Description:	Summary: Asterisk is prone to a denial of service vulnerability. Vulnerability Insight: Asterisk may crash when processing an incoming REGISTER request if that REGISTER contains a Contact header with a lengthy URI. This crash will only happen for requests that pass authentication. Unauthenticated REGISTER requests will not result in a crash occurring. This vulnerability only affects Asterisk when using PJSIP as its SIP stack. The chan_sip module does not have this problem. Vulnerability Impact: An authenticated attacker may crash Asterisk causing a denial of service condition. Affected Software/OS: Asterisk Open Source version 13.x and Certified Asterisk version 13.1. Solution: Update to version 13.8.1, 13.1-cert5 or later. CVSS Score: 6.8 CVSS Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C
Copyright	Copyright (C) 2016 Greenbone AG

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