Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sangoma | Asterisk | >= 16.0.0, < 16.29.1 |
| Sangoma | Certified Asterisk | 18.9 |
Related Weaknesses (CWE)
References
- https://downloads.asterisk.org/pub/security/AST-2022-008.htmlPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
- https://www.debian.org/security/2023/dsa-5358
- https://downloads.asterisk.org/pub/security/AST-2022-008.htmlPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html
- https://www.debian.org/security/2023/dsa-5358
FAQ
What is CVE-2022-42705?
CVE-2022-42705 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 ac...
How severe is CVE-2022-42705?
CVE-2022-42705 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-42705?
Check the references section above for vendor advisories and patch information. Affected products include: Sangoma Asterisk, Sangoma Certified Asterisk.