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CVE-2025-1131

Asterisk Unsafe Shell Sourcing in safe_asterisk Leads to Local Privilege Escalation

Published: Sep 23, 2025Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-427
NVD MITRE
7.8CVSSHIGH
EPSS Score
0.2%
Top 90.2%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-427

Affected Products

asterisksangoma
On-prem
Communications
certified asterisksangoma
On-prem
Communications / voip-telephony
AsteriskDigium, Inc.
On-prem
Communications / voip-telephony
AsteriskAsterisk
On-premWeb App
Communications / voip-telephony
sangomacommercialCACommunicationsaka freepbx, certified asterisk, asterisk
digium, inc.commercialUSCommunicationsaka digium, digium inc.
asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Persistence
View detailed technique mapping

References

https://github.com/asterisk/asterisk/security/advisories/GHSA-v9q8-9j8m-5xwp
github.com
https://lists.debian.org/debian-lts-announce/2025/10/msg00006.html
lists.debian.org

Timeline

Published
Sep 23, 2025
Last Updated
Nov 3, 2025

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