Bug#1078574: asterisk: CVE-2024-42365

[Salvatore Bonaccorso]

Source: asterisk
Version: 1:20.8.1~dfsg+~cs6.14.40431414-1
Severity: grave
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for asterisk.

CVE-2024-42365[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2024-42365
    https://www.cve.org/CVERecord?id=CVE-2024-42365
[1] https://github.com/asterisk/asterisk/security/advisories/GHSA-c4cg-9275-6w44

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore