CVE-2022-42705
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductSangoma Asterisk
PublishedDec 5, 2022
First seenDec 5, 2022
Weakness typeCWE-416Use after free
How to fix
Update
- sangoma asterisk16.29.1, 18.15.1, 19.7.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sangoma asterisk | 16.0.0 ≤ v < 16.29.1, 18.14.0 ≤ v < 18.15.1, 19.6.0 ≤ v < 19.7.1, 20.0.0 | 16.29.1, 18.15.1, 19.7.1 |
| sangoma certified_asterisk | 18.9 | — |
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