CVE-2022-42705

medium

Description

A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.

References

https://downloads.asterisk.org/pub/security/AST-2022-008.html

https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html

https://www.debian.org/security/2023/dsa-5358

Details

Source: MITRE

Published: 2022-12-05

Updated: 2023-02-24

Type: CWE-416

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM