CVE-2022-42705

Debian Security Advisory 5358-1

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Un use after free en res_pjsip_pubsub.c en Sangoma Asterisk 16.28, 18.14, 19.6 y certificado/18.9-cert2 puede permitir que un atacante remoto autenticado bloquee Asterisk (denegación de servicio) al realizar actividad en una suscripción a través de un transporte confiable en al mismo tiempo que Asterisk también realiza actividad en esa suscripción.

Multiple security vulnerabilities have been discovered in Asterisk, an Open Source Private Branch Exchange. Buffer overflows and other programming errors could be exploited for launching a denial of service attack or the execution of arbitrary code.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-10-10 CVE Reserved
2022-12-05 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (3)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://downloads.asterisk.org/pub/security/AST-2022-008.html	2023-02-24

URL	Date	SRC
https://www.debian.org/security/2023/dsa-5358	2023-02-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Sangoma Search vendor "Sangoma"		Asterisk Search vendor "Sangoma" for product "Asterisk"				>= 16.0.0 < 16.29.1 Search vendor "Sangoma" for product "Asterisk" and version " >= 16.0.0 < 16.29.1"		-		Affected
Sangoma Search vendor "Sangoma"		Asterisk Search vendor "Sangoma" for product "Asterisk"				>= 18.14.0 < 18.15.1 Search vendor "Sangoma" for product "Asterisk" and version " >= 18.14.0 < 18.15.1"		-		Affected
Sangoma Search vendor "Sangoma"		Asterisk Search vendor "Sangoma" for product "Asterisk"				>= 19.6.0 < 19.7.1 Search vendor "Sangoma" for product "Asterisk" and version " >= 19.6.0 < 19.7.1"		-		Affected
Sangoma Search vendor "Sangoma"		Asterisk Search vendor "Sangoma" for product "Asterisk"				20.0.0 Search vendor "Sangoma" for product "Asterisk" and version "20.0.0"		-		Affected
Sangoma Search vendor "Sangoma"		Certified Asterisk Search vendor "Sangoma" for product "Certified Asterisk"				18.9 Search vendor "Sangoma" for product "Certified Asterisk" and version "18.9"		cert2		Affected