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Vulnerability · Published Dec 5, 2022 · Assigned by mitre

CVE-2022-42705

Medium 6.5

In plain English

A medium-severity use-after-free in the asterisk package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)1.3%top 29.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20asterisk18.15.1-r0ALPINE-CVE-2022-42705
Alpine:v3.21asterisk18.15.1-r0ALPINE-CVE-2022-42705
Alpine:v3.22asterisk18.15.1-r0ALPINE-CVE-2022-42705
Alpine:v3.23asterisk18.15.1-r0ALPINE-CVE-2022-42705
Alpine:v3.24asterisk18.15.1-r0ALPINE-CVE-2022-42705
Debian:14asterisk1:20.0.1~dfsg+~cs6.12.40431414-1DEBIAN-CVE-2022-42705
Ubuntu:22.04:LTSasteriskno fix listedUBUNTU-CVE-2022-42705
Ubuntu:24.04:LTSasteriskno fix listedUBUNTU-CVE-2022-42705
Ubuntu:25.10asteriskno fix listedUBUNTU-CVE-2022-42705
Ubuntu:26.04:LTSasteriskno fix listedUBUNTU-CVE-2022-42705
Ubuntu:26.10asteriskno fix listedUBUNTU-CVE-2022-42705

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References