CVE-2023-6740 Privilege escalation in jar_signature
A local attacker can escalate privileges via the jar_signature agent plugin in Checkmk, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-6740?
CVE-2023-6740 is a high-severity vulnerability in Checkmk Checkmk, published on 12 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Privilege escalation in jar_signature agent plugin in Checkmk before 2.2.0p18, 2.1.0p38 and 2.0.0p39 allows local user to escalate privileges
Which versions are affected by CVE-2023-6740?
It affects 2 products.
Products include Checkmk Checkmk, Tribe29 Checkmk.
How do I fix CVE-2023-6740?
No fix has been published for CVE-2023-6740 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-6740 being exploited?
There is no known exploitation of CVE-2023-6740 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-m89q-5h24-2xm5, UBUNTU-CVE-2023-6740.