CVE-2023-45802 is a medium-severity vulnerability affecting the Apache HTTP Server. This vulnerability allows for a memory leak during the handling of HTTP/2 stream resets (RST frames) by clients. When a client resets an HTTP/2 stream, there is a time window where the request's memory resources are not reclaimed immediately, which could lead to increased memory usage and potential service disruption.
The CVSS score for this vulnerability is 5.9, indicating a medium level of risk. The attack vector is network-based, and the attack complexity is classified as high, meaning that successful exploitation may require advanced knowledge or capabilities. While the probability of encountering this bug in normal HTTP/2 usage is low, organizations must remain vigilant to prevent potential memory exhaustion.
Organizations should prioritize patching immediately. The recommended version to upgrade to is 2.4.58, which addresses this vulnerability. Failure to apply the patch could result in increased memory usage and eventual denial of service.
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