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CVE-2022-42705

Date: December 4, 2022

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.

Language: C

Severity Score

Related Resources (7)

https://security-tracker.debian.org/tracker/CVE-2022-42705
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
https://nvd.nist.gov/vuln/detail/CVE-2022-42705
https://security.alpinelinux.org/vuln/CVE-2022-42705
https://www.debian.org/security/2023/dsa-5358
https://downloads.asterisk.org/pub/security/AST-2022-008.html
https://www.mend.io/vulnerability-database/CVE-2022-42705

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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