DescriptionHAProxy before 1.9.7 mishandles a reload with rotated keys, which triggers use of uninitialized, and very predictable, HMAC keys. This is related to an include/types/ssl_sock.h error.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

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+deb10u5fixed
bullseye (security), bullseye2.2.9-2+deb11u6fixed
bookworm, bookworm (security)2.6.12-1+deb12u1fixed
sid, trixie2.9.7-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
haproxysource(unstable)(not affected)


- haproxy <not-affected> (Vulnerable code introduced in 1.9.x series in v1.9.2)
Introduced in:;a=commit;h=9e7547740cc2d0a6851de8ca9ac57488bdbb8bf2
Fixed by:;a=commit;h=8ef706502aa2000531d36e4ac56dbdc7c30f718d

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