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.
Metrics
Affected Vendors & Products
References
History
Tue, 12 Nov 2024 20:15:00 +0000
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Dena
Dena h2o |
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CPEs | cpe:2.3:a:dena:h2o:*:*:*:*:*:*:*:* | |
Vendors & Products |
Dena
Dena h2o |
Fri, 11 Oct 2024 21:15:00 +0000
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Metrics |
ssvc
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Fri, 11 Oct 2024 14:45:00 +0000
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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. | |
Title | H2O assertion failure when HTTP/3 requests are cancelled | |
Weaknesses | CWE-617 | |
References |
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Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2024-10-11T14:28:35.262Z
Updated: 2024-10-11T14:40:53.132Z
Reserved: 2024-08-28T20:21:32.803Z
Link: CVE-2024-45403
Vulnrichment
Updated: 2024-10-11T14:40:48.151Z
NVD
Status : Analyzed
Published: 2024-10-11T15:15:05.123
Modified: 2024-11-12T19:59:51.097
Link: CVE-2024-45403
Redhat
No data.