CVE-2024-42365

Name	CVE-2024-42365
Description	Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with `write=originate` may change all configuration files in the `/etc/asterisk/` directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the `FILE` function inside the `SET` application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3925-1
Debian Bugs	1078574

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
asterisk (PTS)	bullseye	1:16.28.0~dfsg-0+deb11u4	vulnerable
	bullseye (security)	1:16.28.0~dfsg-0+deb11u8	fixed
	sid	1:22.5.2~dfsg+~cs6.15.60671435-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
asterisk	source	bullseye	1:16.28.0~dfsg-0+deb11u5		DLA-3925-1
asterisk	source	(unstable)	1:20.9.3~dfsg+~cs6.14.60671435-1			1078574

Notes

https://github.com/asterisk/asterisk/security/advisories/GHSA-c4cg-9275-6w44
https://github.com/asterisk/asterisk/commit/b4063bf756272254b160b6d1bd6e9a3f8e16cc71 (21.4.2)
https://github.com/asterisk/asterisk/commit/bbe68db10ab8a80c29db383e4dfe14f6eafaf993 (20.9.2)
https://github.com/asterisk/asterisk/commit/faddd99f2b9408b524e5eb8a01589fe1fa282df2 (18.24.2)