| Package | Affected versions | Patched versions |
|---|---|---|
| asterisk | = 20.0.0≥ 16.0.0, < 16.29.1≥ 18.14.0, < 18.15.1≥ 19.6.0, < 19.7.1 | 16.29.118.15.119.7.1 |
| certified asterisk | = 18.9 |
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.
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