CVE-2022-42705
6.5
MEDIUM
CVSS 3.1
EPSS 1.5%
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.
How to fix CVE-2022-42705
To remediate CVE-2022-42705, upgrade the affected package to a fixed version below.
- Alpine/asterisk—upgrade to 18.20.2-r0 or later
- —upgrade to 1:16.28.0~dfsg-0+deb11u2 or later
Is CVE-2022-42705 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 18.20.2-r0
- from 0, < 1:16.28.0~dfsg-0+deb11u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |