CVE-2023-40225

NameCVE-2023-40225
DescriptionHAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret the payload as an extra request.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1043502

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
haproxy (PTS)buster1.8.19-1+deb10u3fixed
buster (security)1.8.19-1+deb10u4fixed
bullseye (security), bullseye2.2.9-2+deb11u5vulnerable
bookworm2.6.12-1vulnerable
sid, trixie2.6.15-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
haproxysourcebuster(not affected)
haproxysource(unstable)2.6.15-11043502

Notes

[bookworm] - haproxy <postponed> (Minor issue, fix along with future DSA)
[bullseye] - haproxy <postponed> (Minor issue, fix along with future DSA)
[buster] - haproxy <not-affected> (Vulnerable code not present)
https://github.com/haproxy/haproxy/issues/2237
https://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856

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