What is CVE-2022-42705?

CVE-2022-42705 is a medium-severity vulnerability in Sangoma Asterisk, classified under Use After Free. CVSS score: 6.5/10. Published 2022-12-05.

How severe is CVE-2022-42705?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Use After Free in Sangoma Asterisk

CVE-2022-42705

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…

Vulnerability class: Use-After-Free

EPSS: 0.012 (65.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Sangoma Asterisk — versions 20.0.0
Sangoma Certified_asterisk — versions 18.9
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

References

cve@mitre.org (Patch, Vendor Advisory)
cve@mitre.org (mailing-list)
cve@mitre.org (vendor-advisory)

Frequently asked questions

What is CVE-2022-42705?: CVE-2022-42705 is a medium-severity vulnerability in Sangoma Asterisk, classified under Use After Free. CVSS score: 6.5/10. Published 2022-12-05.
How severe is CVE-2022-42705?: Medium severity. CVSS v3 base score is 6.5 out of 10.