CVE-2023-49786

CVSS V2 None CVSS V3 None

Description

Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable Asterisk servers for calls that rely on DTLS-SRTP. Commit d7d7764cb07c8a1872804321302ef93bf62cba05 contains a fix, which is part of versions 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6.

Overview

CVE ID
CVE-2023-49786

Assigner
GitHub_M

Vulnerability Status
PUBLISHED

Published Version
2023-12-14T19:47:46.306Z

Last Modified Date
2023-12-14T19:47:46.306Z

Weakness Enumerations

CWE	URL
CWE-703	http://cwe.mitre.org/data/definitions/703.html

References

Reference URL	Reference Tags
https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq	x_refsource_CONFIRM
https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05	x_refsource_MISC
https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2023/12/15/7
http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html
http://seclists.org/fulldisclosure/2023/Dec/24
https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2023-49786
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-49786

History

Created	Old Value	New Value	Data Type	Notes
2024-06-25 12:46:44				Added to TrackCVE