Vulnerability Description
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes (e.g., path level) are expected to inherit the configuration defined in outer scopes (e.g., global level). However, if a header directive is used in the inner scope, all the definition in outer scopes are ignored. This can lead to headers not being modified as expected. Depending on the headers being added or removed unexpectedly, this behavior could lead to unexpected client behavior. This vulnerability is fixed in commit 123f5e2b65dcdba8f7ef659a00d24bd1249141be.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dena | H2O | <= 2024-02-11 |
Related Weaknesses (CWE)
References
- https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141bePatch
- https://github.com/h2o/h2o/issues/3332Issue Tracking
- https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pjExploitVendor Advisory
FAQ
What is CVE-2024-25622?
CVE-2024-25622 is a vulnerability with a CVSS score of 3.1 (LOW). h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The conf...
How severe is CVE-2024-25622?
CVE-2024-25622 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-25622?
Check the references section above for vendor advisories and patch information. Affected products include: Dena H2O.