CVE-2022-42705

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

05/12/2022

Last modified:

24/04/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:sangoma:asterisk::::::::	16.0.0 (including)	16.29.1 (excluding)
cpe:2.3:a:sangoma:asterisk::::::::	18.14.0 (including)	18.15.1 (excluding)
cpe:2.3:a:sangoma:asterisk::::::::	19.6.0 (including)	19.7.1 (excluding)
cpe:2.3:a:sangoma:asterisk:20.0.0:::::::*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-42705

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools