CVE-2018-11763

Name	CVE-2018-11763
Description	In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	909591

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
apache2 (PTS)	bullseye	2.4.62-1~deb11u1	fixed
	bullseye (security)	2.4.62-1~deb11u2	fixed
	bookworm, bookworm (security)	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	Debian Bugs
apache2	source	jessie	(not affected)
apache2	source	stretch	2.4.25-3+deb9u6
apache2	source	(unstable)	2.4.35-1	909591

Notes

[jessie] - apache2 <not-affected> (Vulnerable code not present)
HTTP/2 support introduced in 2.4.17
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-11763