CVE-2023-45802

Name	CVE-2023-45802
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3818-1, DSA-5662-1, ELA-1129-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
apache2 (PTS)	jessie, jessie (lts)	2.4.10-10+deb8u29	fixed
	stretch (security)	2.4.25-3+deb9u13	vulnerable
	stretch (lts), stretch	2.4.25-3+deb9u19	fixed
	buster, buster (lts)	2.4.59-1~deb10u4	fixed
	buster (security)	2.4.59-1~deb10u1	fixed
	bullseye	2.4.62-1~deb11u1	fixed
	bullseye (security)	2.4.62-1~deb11u2	fixed
	bookworm (security), bookworm	2.4.62-1~deb12u2	fixed
	sid, trixie	2.4.62-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
apache2	source	jessie	(not affected)
apache2	source	stretch	2.4.25-3+deb9u17	ELA-1129-1
apache2	source	buster	2.4.59-1~deb10u1	DLA-3818-1
apache2	source	bullseye	2.4.59-1~deb11u1	DSA-5662-1
apache2	source	bookworm	2.4.59-1~deb12u1	DSA-5662-1
apache2	source	(unstable)	2.4.58-1

Notes

https://www.openwall.com/lists/oss-security/2023/10/19/6
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2023-45802
https://github.com/icing/blog/blob/main/h2-rapid-reset.md#cve-2023-45802
[jessie] - apache2 <not-affected> (HTTP/2 support was first introduced in version 2.4.17)