CVE-2026-23741
Description
Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the asterisk/contrib/scripts/ast_coredumper runs as root, as noted by the NOTES tag on line 689 of the ast_coredumper file. The script will source the contents of /etc/asterisk/ast_debug_tools.conf, which resides in a folder that is writeable by the asterisk user:group. Due to the /etc/asterisk/ast_debug_tools.conf file following bash semantics and it being loaded; an attacker with write permissions may add or modify the file such that when the root ast_coredumper is run; it would source and thereby execute arbitrary bash code found in the /etc/asterisk/ast_debug_tools.conf. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.
CVSS Details
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Threat Intelligence
Weaknesses 1
Affected Products 15
| Vendor | Product | Version | Range |
|---|---|---|---|
| sangoma | asterisk | * | <20.18.2 |
| sangoma | asterisk | * | ≥21.0.0 – <21.12.1 |
| sangoma | asterisk | * | ≥22.0.0 – <22.8.2 |
| sangoma | asterisk | * | ≥23.0.0 – <23.2.2 |
| sangoma | certified_asterisk | * | ≤18.9 |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
| sangoma | certified_asterisk | 20.7 | any |
References 1
- github.com https://github.com/asterisk/asterisk/security/advisories/GHSA-rvch-3jmx-3jf3
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.