CVE-2019-9518

Name	CVE-2019-9518
Description	Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-4520-1
Debian Bugs	935314

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
trafficserver (PTS)	buster (security), buster, buster (lts)	8.1.7-0+deb10u4	fixed
	bullseye	8.1.10+ds-1~deb11u1	fixed
	bullseye (security)	8.1.11+ds-0+deb11u1	fixed
	bookworm (security), bookworm	9.2.5+ds-0+deb12u1	fixed
	sid	9.2.5+ds-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
trafficserver	source	buster	8.0.2+ds-1+deb10u1		DSA-4520-1
trafficserver	source	(unstable)	8.0.5+ds-1			935314

Notes

https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
https://github.com/apache/trafficserver/pull/5850
https://github.com/apache/trafficserver/blob/8.0.x/CHANGELOG-8.0.5