CVE-2024-45403
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
11/10/2024
Last modified:
12/11/2024
Description
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. When h2o is configured as a reverse proxy and HTTP/3 requests are cancelled by the client, h2o might crash due to an assertion failure. The crash can be exploited by an attacker to mount a Denial-of-Service attack. By default, the h2o standalone server automatically restarts, minimizing the impact. However, HTTP requests that were served concurrently will still be disrupted. The vulnerability has been addressed in commit 1ed32b2. Users may disable the use of HTTP/3 to mitigate the issue.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:* | 2024-06-18 (including) | 2024-09-04 (excluding) |
To consult the complete list of CPE names with products and versions, see this page