| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3335-1, DSA-5358-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| asterisk (PTS) | buster | 1:16.2.1~dfsg-1+deb10u2 | vulnerable |
| buster (security) | 1:16.28.0~dfsg-0+deb10u4 | fixed | |
| bullseye | 1:16.28.0~dfsg-0+deb11u3 | fixed | |
| bullseye (security) | 1:16.28.0~dfsg-0+deb11u4 | fixed | |
| sid | 1:20.6.0~dfsg+~cs6.13.40431414-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| asterisk | source | buster | 1:16.28.0~dfsg-0+deb10u2 | DLA-3335-1 | ||
| asterisk | source | bullseye | 1:16.28.0~dfsg-0+deb11u2 | DSA-5358-1 | ||
| asterisk | source | (unstable) | 1:20.0.1~dfsg+~cs6.12.40431414-1 |
https://issues.asterisk.org/jira/browse/ASTERISK-30244
https://downloads.asterisk.org/pub/security/AST-2022-008.html
https://git.asterisk.org/gitweb/?p=asterisk/asterisk.git;a=commit;h=7684c9e907fb85f5c58b025d9e385ad2600f12a2