Asterisk allows `Write=originate` as sufficient permissions for code execution / `System()` dialplan
概要
Asterisk allows Write=originate as sufficient permissions for code execution / System() dialplan
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
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.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Alpine Linux ALPINE-CVE-2024-42365 asterisk 修正版: 18.24.3-r0
- Debian DEBIAN-CVE-2024-42365 asterisk 修正版: 1:16.28.0~dfsg-0+deb11u5
- Ubuntu UBUNTU-CVE-2024-42365 asterisk
参照URL
- 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