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Description

A local privilege escalation vulnerability exists in the safe_asterisk script included with the Asterisk toolkit package. When Asterisk is started via this script (common in SysV init or FreePBX environments), it sources all .sh files located in /etc/asterisk/startup.d/ as root, without validating ownership or permissions. Non-root users with legitimate write access to /etc/asterisk can exploit this behaviour by placing malicious scripts in the startup.d directory, which will then execute with root privileges upon service restart.

PUBLISHED Reserved 2025-02-08 | Published 2025-09-23 | Updated 2025-11-03 | Assigner Gridware




HIGH: 7.0CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N/V:C/RE:H/U:Amber

Problem types

CWE-427 Uncontrolled Search Path Element

Product status

Default status
unaffected

Asterisk <=18.26.2 (custom)
affected

Asterisk <= 20.15.0 (custom)
affected

Asterisk <= 21.10.0 (custom)
affected

Asterisk <= 22.5.0 (custom)
affected

Credits

Abdul Mhanni finder

References

lists.debian.org/debian-lts-announce/2025/10/msg00006.html

github.com/...terisk/security/advisories/GHSA-v9q8-9j8m-5xwp

cve.org (CVE-2025-1131)

nvd.nist.gov (CVE-2025-1131)

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