CVE-2022-42705

NameCVE-2022-42705
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
asterisk (PTS)buster1:16.2.1~dfsg-1+deb10u2vulnerable
buster (security)1:16.28.0~dfsg-0+deb10u1vulnerable
bullseye (security), bullseye1:16.28.0~dfsg-0+deb11u1vulnerable
bookworm, sid1:20.1.0~dfsg+~cs6.12.40431414-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
asterisksource(unstable)1:20.0.1~dfsg+~cs6.12.40431414-1

Notes

[bullseye] - asterisk <no-dsa> (Minor issue)
[buster] - asterisk <no-dsa> (Minor issue)
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

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