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CVE-2026-57203medium6.9

Asterisk: Local privilege escalation through ast_loggrabber's world-writable helper location

Impact

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, ast_loggrabber executes a Python script from the world-writable /tmp directory. An attacker already authorized to open a shell session on the Asterisk server may place a malicious script there and gain elevated privileges or execute code when an administrator runs ast_loggrabber as a user with elevated privileges. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11,…

Source excerpt · GitHub_M

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

asterisk · asterisk

Version / rangeSource status
< 20.20.1affected
>= 21.0.0-pre1, < 21.12.3affected
>= 22.0.0-pre1, < 22.10.1affected
>= 23.0.0-pre1, < 23.4.1affected
GitHub_M version evidence

asterisk · certified-asterisk

Version / rangeSource status
< 20.7-cert11affected
>= 22.8-cert1-pre1, < 22.8-cert3affected
GitHub_M version evidence

Original source description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, ast_loggrabber executes a Python script from the world-writable /tmp directory. An attacker already authorized to open a shell session on the Asterisk server may place a malicious script there and gain elevated privileges or execute code when an administrator runs ast_loggrabber as a user with elevated privileges. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

References