CVE-2024-7765: Denial of Service in h2oai/h2o-3
First published: Thu Mar 20 2025(Updated: )
In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.
Credit: security@huntr.dev
| Affected Software | Affected Version | How to fix |
|---|---|---|
| H2O-3 | ||
| maven/ai.h2o:h2o-core | >=3.32.1.2<=3.46.0.2 | |
| pip/h2o | >=3.32.1.2<=3.46.0.2 | |
| Hastymail | =3.46.0.2 |
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Reference Links
- https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff
- https://nvd.nist.gov/vuln/detail/CVE-2024-7765
- https://github.com/h2oai/h2o-3/blob/7d418fa19d3ab434f742818e37f891bef9102c97/h2o-core/src/main/java/water/parser/ParseDataset.java#L900
- https://github.com/advisories/GHSA-6w62-3jvj-mfj6 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-7765?
CVE-2024-7765 has a high severity level due to its potential to cause denial of service.
How do I fix CVE-2024-7765?
To fix CVE-2024-7765, upgrade to a version of H2O-3 later than 3.46.0.2.
What type of attack does CVE-2024-7765 enable?
CVE-2024-7765 enables a denial of service attack by exhausting server memory through large GZIP file uploads.
Which versions of H2O-3 are affected by CVE-2024-7765?
CVE-2024-7765 affects H2O-3 versions from 3.32.1.2 to 3.46.0.2 inclusive.
What happens when CVE-2024-7765 is exploited?
When CVE-2024-7765 is exploited, the server becomes unresponsive due to memory exhaustion and slow-running jobs.
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