Asterisk allows `Write=originate` as sufficient permissions for code execution / `System()` dialplan
Summary
Asterisk allows Write=originate as sufficient permissions for code execution / System() dialplan
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2024-42365 asterisk Fixed in: 18.24.3-r0
- Debian DEBIAN-CVE-2024-42365 asterisk Fixed in: 1:16.28.0~dfsg-0+deb11u5
- Ubuntu UBUNTU-CVE-2024-42365 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- patch github.com
- patch github.com
- patch github.com
- patch github.com
- web github.com
- web github.com
- web lists.debian.org