CVE-2024-31446 OpenComputers Denial of Service using xpcall
A user can block the Minecraft server thread by executing specific Lua code in OpenComputers, requiring a forced shutdown.
- 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-2024-31446?
CVE-2024-31446 is a high-severity denial of service vulnerability in MightyPirates OpenComputers, published on 16 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
OpenComputers is a Minecraft mod that adds programmable computers and robots to the game. A user can use OpenComputers to get a Computer thread stuck in the Lua VM, which eventually blocks the Server thread, requiring the server to be forcibly shut down. This can be accomplished using any device in the mod and can be performed by anyone who can execute Lua code on them. This occurs while using the native Lua library. LuaJ appears to not have this issue. This vulnerability is fixed in 1.8.4. The GregTech: New Horizons modpack uses its own modified version of OpenComputers. They have applied the relevant patch in version 1.10.10-GTNH.
Weakness: CWE-770
Which versions are affected by CVE-2024-31446?
How do I fix CVE-2024-31446?
No fix has been published for CVE-2024-31446 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-31446 being exploited?
There is no known exploitation of CVE-2024-31446 in the wild and no public exploit code.
Sources
Also known as GHSA-54j4-xpgj-cq4g.