Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-1131

Severity CVSS v4.0:
HIGH
Type:
CWE-427 Uncontrolled Search Path Element
Publication date:
23/09/2025
Last modified:
03/11/2025

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.<br /> <br /> <br /> 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.

Impact

Vector 4.0
CVSS: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 CVSS v4.0 Severity and Metrics:

Base Score: 7.00 HIGH
Vector: CVSS: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

Attack Vector (AV): Local
Attack Complexity (AC): Low
Attack Requirements (AT): Present
Privileges Required (PR): Low
User Interaction (UI): Passsive
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): High
Integrity (SI): High
Availability (SA): None
Value Density (V): Concentrated
Vulnerability Response Effort (RE): High
Provider Urgency (U): Amber

Base Score 4.0
7.00
Severity 4.0
HIGH
Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 18.26.3 (excluding)
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 20.0.0 (including) 20.15.1 (excluding)
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 21.0.0 (including) 21.10.1 (excluding)
cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* 22.0.0 (including) 22.5.1 (excluding)
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1-rc1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert10:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert11:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert12:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert13:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert14:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert15:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools