CVE-2024-5979 Denial of Service via Invalid Argument in h2oai/h2o-3
Attackers can crash the H2O-3 server by invoking a specific tool with invalid arguments, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-5979?
CVE-2024-5979 is a high-severity denial of service vulnerability in h2oai/h2o-3, published on 27 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In h2oai/h2o-3 version 3.46.0, the `run_tool` command in the `rapids` component allows the `main` function of any class under the `water.tools` namespace to be called. One such class, `MojoConvertTool`, crashes the server when invoked with an invalid argument, causing a denial of service.
Weakness: CWE-94
Which versions are affected by CVE-2024-5979?
3 open source packages ship an affected version, including h2o. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
h2o PyPI | All versions to 3.46.0 | None |
h2o PyPI | All versions to 3.46.0 | None |
h2o PyPI | All versions to 3.46.0 | None |
Products include H2o H2o.
How do I fix CVE-2024-5979?
No fix has been published for CVE-2024-5979 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-2024-5979 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-5979 exists.
Other vulnerabilities in h2oai/h2o-3
Sources
Also known as GHSA-58m3-rcvp-f9ww, PYSEC-2026-1437.