CVE-2023-30847
High
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.
SeverityHigh
CVSS8.2
Exploit probability60. percentile0.9%
ProductDena H2o
PublishedApr 27, 2023
First seenApr 27, 2023
Weakness typeCWE-824CWE-824
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dena h2o | v ≤ 2.2.6, 2.3.0 | — |
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