Published: 22/11/2019 Updated: 13/05/2022

CVSS v2 Base Score: 5.8 | Impact Score: 4.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 6.5 | Impact Score: 2.5 | Exploitability Score: 3.9

VMScore: 516

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

An issue exists in channels/chan_sip.c in Sangoma Asterisk 13.x prior to 13.29.2, 16.x prior to 16.6.2, and 17.x prior to 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport.

Vulnerable Product	Search on Vulmon	Subscribe to Product
digium certified asterisk 13.21.0
digium asterisk
debian debian linux 8.0
debian debian linux 9.0

Debian Bug report logs - #947381 asterisk: CVE-2019-18790: AST-2019-006: SIP request can change address of a SIP peer Package: src:asterisk; Maintainer for src:asterisk is Debian VoIP Team <pkg-voip-maintainers@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 25 Dec 2019 22:36 ...

CWE-862 https://www.asterisk.org/downloads/security-advisories http://downloads.asterisk.org/pub/security/AST-2019-006.html https://lists.debian.org/debian-lts-announce/2019/11/msg00038.html https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=947381 https://nvd.nist.gov

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CVE-2019-18790

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