Vulnerability Description
H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. Users should upgrade to commit f010336 or later.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dena | H2O | <= 2.2.6 |
Related Weaknesses (CWE)
References
- https://github.com/h2o/h2o/commit/f010336bab162839df43d9e87570897466c97e33Patch
- https://github.com/h2o/h2o/pull/3229Vendor Advisory
- https://github.com/h2o/h2o/security/advisories/GHSA-p5hj-phwj-hrvxPatchVendor Advisory
- https://github.com/h2o/h2o/commit/f010336bab162839df43d9e87570897466c97e33Patch
- https://github.com/h2o/h2o/pull/3229Vendor Advisory
- https://github.com/h2o/h2o/security/advisories/GHSA-p5hj-phwj-hrvxPatchVendor Advisory
FAQ
What is CVE-2023-30847?
CVE-2023-30847 is a vulnerability with a CVSS score of 8.2 (HIGH). H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from un...
How severe is CVE-2023-30847?
CVE-2023-30847 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-30847?
Check the references section above for vendor advisories and patch information. Affected products include: Dena H2O.