Test ID:	1.3.6.1.4.1.25623.1.0.145527
Category:	Denial of Service
Title:	Asterisk DoS Vulnerability (AST-2021-006)
Summary:	Asterisk is prone to a denial of service vulnerability when; negotiating T.38 with a zero port.
Description:	Summary: Asterisk is prone to a denial of service vulnerability when negotiating T.38 with a zero port. Vulnerability Insight: When Asterisk sends a re-invite initiating T.38 faxing and the endpoint responds with a m=image line and zero port, a crash will occur in Asterisk. This is a re-occurrence of AST-2019-004. Affected Software/OS: Asterisk Open Source 16.x, 17.x, 18.x and 16.x Certified Asterisk. Solution: Update to version 16.16.2, 17.9.3, 18.2.2, 16.8-cert7 or later. CVSS Score: 4.0 CVSS Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2019-15297 http://seclists.org/fulldisclosure/2021/Mar/5 http://packetstormsecurity.com/files/154371/Asterisk-Project-Security-Advisory-AST-2019-004.html http://packetstormsecurity.com/files/161671/Asterisk-Project-Security-Advisory-AST-2021-006.html Common Vulnerability Exposure (CVE) ID: CVE-2021-46837 Debian Security Information: DSA-5285 (Google Search) https://www.debian.org/security/2022/dsa-5285 https://downloads.asterisk.org/pub/security/AST-2021-006.html https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
Copyright	Copyright (C) 2021 Greenbone AG

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