Bug 2562443 (CVE-2026-57203)

Summary: CVE-2026-57203 asterisk: Asterisk: Privilege escalation via insecure script execution in ast_loggrabber
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Asterisk. The ast_loggrabber utility executes a script directly from the shared, world-writable temporary directory (/tmp). A local attacker with shell access can place a malicious script in this location to achieve privilege escalation and execute arbitrary code when an administrative user runs ast_loggrabber.
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Bug Depends On: 2564779, 2564781, 2564782, 2564783    
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Description OSIDB Bzimport 2026-10-27 22:01:59 UTC
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.