Descriptionnginx 0.5.6 through 1.7.4, when using the same shared ssl_session_cache or ssl_session_ticket_key for multiple servers, can reuse a cached SSL session for an unrelated context, which allows remote attackers with certain privileges to conduct "virtual host confusion" attacks.
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)
ReferencesDLA-55-1, DSA-3029-1
NVD severitymedium
Debian Bugs761940

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nginx (PTS)jessie1.6.2-5+deb8u5fixed
jessie (security)1.6.2-5+deb8u6fixed
stretch, stretch (security)1.10.3-1+deb9u3fixed
buster, buster (security)1.14.2-2+deb10u1fixed
bullseye, sid1.16.1-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs

Upstream patch: (stable-1.6 branch)
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