CVE-2023-50247
CVSS 3.1 Score 7.5 of 10 (high)
Details
Published Dec 12, 2023
Updated: Dec 19, 2023
CWE ID 770
Summary
CVE-2023-50247 affects version 2.3.0-beta and prior of the h2o HTTP server, which uses the quicly stack for HTTP/3. A remote attacker can exploit a state exhaustion vulnerability in this stack, causing H2O to retain progressively more memory and ultimately abort due to memory exhaustion. This issue is specific to HTTP/3 and does not impact HTTP/1 or HTTP/2. The vulnerability has been resolved in commit d67e81d03be12a9d53dc8271af6530f40164cd35. To mitigate the issue without upgrading, administrators can disable HTTP/3 support in their h2o configurations.
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Affected Products
- Dena H2o
Affected Vendors
- Dena
Advisories, Assessments, and Mitigations
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