# CVE-2024-42365

## Summary

- **CVE ID:** CVE-2024-42365
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L)
- **CWE:** CWE-267, CWE-1220
- **Published:** Aug 8, 2024
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- asterisk — asterisk (< 18.24.2)
- asterisk — asterisk (>= 19.0.0, < 20.9.2)
- asterisk — asterisk (>= 21.0.0, < 21.4.2)
- asterisk — asterisk (< 18.9-cert11)
- asterisk — asterisk (>= 19.0, < 20.7-cert2)

## References

- [CNA](https://github.com/asterisk/asterisk/security/advisories/GHSA-c4cg-9275-6w44)
- [CNA](https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4)
- [CNA](https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8)
- [CNA](https://github.com/asterisk/asterisk/commit/b4063bf756272254b160b6d1bd6e9a3f8e16cc71)
- [CNA](https://github.com/asterisk/asterisk/commit/bbe68db10ab8a80c29db383e4dfe14f6eafaf993)
- [CNA](https://github.com/asterisk/asterisk/commit/faddd99f2b9408b524e5eb8a01589fe1fa282df2)
- [CNA](https://github.com/asterisk/asterisk/blob/14367caaf7241df1eceea7c45c5b261989c2c6db/main/manager.c#L6426)
- [CNA](https://github.com/asterisk/asterisk/blob/7d28165cb1b2d02d66e8693bd3fe23ee72fc55d8/main/manager.c#L6426)
- [CVE](https://lists.debian.org/debian-lts-announce/2024/10/msg00016.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 4.70%
- **EPSS Percentile:** 91.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._