CVE-2023-0284 Improper validation of LDAP user IDs
Attackers controlling LDAP user IDs can manipulate files on the server due to improper input validation in Checkmk.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-0284?
CVE-2023-0284 is a medium-severity path traversal vulnerability in Checkmk Checkmk, published on 24 Jan 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk <= 2.1.0p19, Checkmk <= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.
Weakness: CWE-20
Which versions are affected by CVE-2023-0284?
It affects 2 products.
Products include Checkmk Checkmk, Tribe29 Checkmk.
How do I fix CVE-2023-0284?
No fix has been published for CVE-2023-0284 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-0284 being exploited?
There is no known exploitation of CVE-2023-0284 in the wild and no public exploit code.
Other vulnerabilities in Checkmk Checkmk
- CVE-2025-39666 omd: Local privilege escalation when executing omd commands as root
- CVE-2024-8606 Fix 2FA bypass via RestAPI
- CVE-2022-46836 PHP code injection in watolib
- CVE-2025-32919 Privilege Escalation in Windows License plugin for Checkmk Windows Agent
- CVE-2024-28827 Privilege escalation in Windows agent
Sources
Also known as GHSA-4w9g-pcf2-cj8r, UBUNTU-CVE-2023-0284.