CVE-2026-23741 (GCVE-0-2026-23741)

Vulnerability from cvelistv5 – Published: 2026-02-06 16:47 – Updated: 2026-02-06 17:26
VLAI
Title
ast_coredumper running as root sources ast_debug_tools.conf from /etc/asterisk; potentially leading to privilege escalation
Summary
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.
Severity
0 (None)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-06 17:22 UTC
CWE
  • CWE-427 - Uncontrolled Search Path Element
Assigner
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 23.2.2
Affected: < 22.8.2
Affected: < 21.12.1
Affected: < 20.18.2
Affected: < 20.7-cert9
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}



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