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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
haproxy (PTS)jessie1.5.8-3+deb8u2fixed
jessie (security)1.5.8-3+deb8u1fixed
buster (security)1.8.19-1+deb10u2fixed
bullseye, sid2.0.13-2fixed

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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