CVE-2024-45397

Name	CVE-2024-45397
Description	h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. When an HTTP request using TLS/1.3 early data on top of TCP Fast Open or QUIC 0-RTT packets is received and the IP-address-based access control is used, the access control does not detect and prohibit HTTP requests conveyed by packets with a spoofed source address. This behavior allows attackers on the network to execute HTTP requests from addresses that are otherwise rejected by the address-based access control. The vulnerability has been addressed in commit 15ed15a. Users may disable the use of TCP FastOpen and QUIC to mitigate 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)
Debian Bugs	1084984

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
h2o (PTS)	buster (security), buster, buster (lts)	2.2.5+dfsg2-2+deb10u2	vulnerable
	bullseye	2.2.5+dfsg2-6	vulnerable
	bookworm	2.2.5+dfsg2-7	vulnerable
	sid, trixie	2.2.5+dfsg2-9	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
h2o	source	buster	(unfixed)	end-of-life
h2o	source	(unstable)	(unfixed)			1084984

Notes

[bookworm] - h2o <no-dsa> (Minor issue)
[bullseye] - h2o <postponed> (Minor issue; can be fixed in next update)
https://github.com/h2o/h2o/security/advisories/GHSA-jf2c-xjcp-wg4c
https://github.com/h2o/h2o/commit/15ed15a2efb83a77bb4baaa5a119e639c2f6898a