CVEvulnerability

CVE-2023-45802

5.9 MEDIUM Published 2023-10-23 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2023-10-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-404

Description

When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that. This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out. Users are recommended to upgrade to version 2.4.58, which fixes the issue.

Affected configurations

• apache http server (>= 2.4.17 < 2.4.58) • fedoraproject fedora 37 • fedoraproject fedora 38 • fedoraproject fedora 39 • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-404 Improper Resource Shutdown or Release weakness

References