CVE-2024-29895: Cacti command injection in cmd_realtime.php
First published: Mon May 13 2024(Updated: )
Cacti provides an operational monitoring and fault management framework. A command injection vulnerability on the 1.3.x DEV branch allows any unauthenticated user to execute arbitrary command on the server when `register_argc_argv` option of PHP is `On`. In `cmd_realtime.php` line 119, the `$poller_id` used as part of the command execution is sourced from `$_SERVER['argv']`, which can be controlled by URL when `register_argc_argv` option of PHP is `On`. And this option is `On` by default in many environments such as the main PHP Docker image for PHP. Commit 53e8014d1f082034e0646edc6286cde3800c683d contains a patch for the issue, but this commit was reverted in commit 99633903cad0de5ace636249de16f77e57a3c8fc.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cacti | >=1.3.0 |
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Reference Links
- https://github.com/Cacti/cacti/security/advisories/GHSA-cr28-x256-xf5m
- https://github.com/Cacti/cacti/commit/53e8014d1f082034e0646edc6286cde3800c683d
- https://github.com/Cacti/cacti/commit/99633903cad0de5ace636249de16f77e57a3c8fc
- https://github.com/Cacti/cacti/blob/501712998589763d411a68d35e3cda98fd9cfd18/cmd_realtime.php#L119
Frequently Asked Questions
What is the severity of CVE-2024-29895?
CVE-2024-29895 is considered a critical vulnerability due to its potential for command injection by unauthenticated users.
How do I fix CVE-2024-29895?
To fix CVE-2024-29895, upgrade to the latest version of Cacti where the vulnerability has been addressed.
Who is affected by CVE-2024-29895?
CVE-2024-29895 affects Cacti versions from 1.3.0 onwards when the PHP `register_argc_argv` option is enabled.
Can CVE-2024-29895 be exploited remotely?
Yes, CVE-2024-29895 can be exploited remotely by any unauthenticated user with access to the vulnerable Cacti instance.
What is the impact of CVE-2024-29895?
The impact of CVE-2024-29895 allows attackers to execute arbitrary commands on the server, leading to potential server compromise.
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