CVE-2022-42705

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.77% Top 30%
Vendor Advisory debian.org Vendor Advisory asterisk.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://downloads.asterisk.org/pub/security/AST-2022-008.html patch vendor advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html mailing list
https://www.debian.org/security/2023/dsa-5358 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-42705?
CVE-2022-42705 has been scored as a medium severity vulnerability.
How to fix CVE-2022-42705?
To fix CVE-2022-42705, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-42705 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-42705 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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