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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 14
https://github.com/asterisk/asterisk/commit/022407ec47adebe27b7ec8bcf5626e5a02f…
security-advisories@github.com
https://github.com/asterisk/asterisk/commit/a51c4e3d6bccce4bc4226c43e78952573a6…
security-advisories@github.com
https://github.com/asterisk/asterisk/commit/ba8e5bdecd5280fc0ab230df59e41ea21b3…
security-advisories@github.com
https://github.com/asterisk/asterisk/commit/bd63fe121d0e86867863bd98b5771e59227…
security-advisories@github.com
https://github.com/asterisk/asterisk/commit/c0fc2ae54cb6289a48a80333432f5fdf5a4…
security-advisories@github.com
https://github.com/asterisk/asterisk/commit/f18ac4c964781f671e400342790bf406796…
security-advisories@github.com
https://github.com/asterisk/asterisk/releases/tag/20.20.1
security-advisories@github.com
https://github.com/asterisk/asterisk/releases/tag/21.12.3
security-advisories@github.com
https://github.com/asterisk/asterisk/releases/tag/22.10.1
security-advisories@github.com
https://github.com/asterisk/asterisk/releases/tag/23.4.1
security-advisories@github.com
https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
security-advisories@github.com
https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
security-advisories@github.com
https://github.com/asterisk/asterisk/security/advisories/GHSA-xgj6-2gc5-5x9c
security-advisories@github.com
https://github.com/asterisk/asterisk/tree/24.0.0-pre1
security-advisories@github.com