CVE-2024-42365
Description
Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with `write=originate` may change all configuration files in the `/etc/asterisk/` directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the `FILE` function inside the `SET` application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.
How to fix
- asterisk asterisk18.24.2, 20.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| asterisk asterisk | v < 18.24.2, 19.0.0 ≤ v < 20.9.1, 21.4.0 | 18.24.2, 20.9.1 |
| asterisk certified_asterisk | 13.13.0, 16.8, 16.8.0, 18.9, 20.7 | — |
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