CVE-2018-16860

NameCVE-2018-16860
DescriptionA flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up to, excluding 4.10.3, when used in AD DC mode. A man in the middle attacker could use this flaw to intercept the request to the KDC and replace the user name (principal) in the request with any desired user name (principal) that exists in the KDC effectively obtaining a ticket for that principal.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1788-1, DSA-4443-1, DSA-4455-1
Debian Bugs928966

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
heimdal (PTS)buster7.5.0+dfsg-3fixed
buster (security)7.5.0+dfsg-3+deb10u2fixed
bullseye (security), bullseye7.7.0+dfsg-2+deb11u3fixed
bookworm7.8.git20221117.28daf24+dfsg-2fixed
sid, trixie7.8.git20221117.28daf24+dfsg-5fixed
samba (PTS)buster2:4.9.5+dfsg-5+deb10u3fixed
buster (security)2:4.9.5+dfsg-5+deb10u5fixed
bullseye2:4.13.13+dfsg-1~deb11u5fixed
bullseye (security)2:4.13.13+dfsg-1~deb11u6fixed
bookworm, bookworm (security)2:4.17.12+dfsg-0+deb12u1fixed
trixie2:4.20.1+dfsg-1fixed
sid2:4.20.1+dfsg-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
heimdalsourcestretch7.1.0+dfsg-13+deb9u3DSA-4455-1
heimdalsource(unstable)7.5.0+dfsg-3928966
sambasourcejessie2:4.2.14+dfsg-0+deb8u13DLA-1788-1
sambasourcestretch2:4.5.16+dfsg-1+deb9u2DSA-4443-1
sambasource(unstable)2:4.9.5+dfsg-4

Notes

[jessie] - heimdal <no-dsa> (Minor issue)
https://www.samba.org/samba/security/CVE-2018-16860.html
https://github.com/heimdal/heimdal/commit/c6257cc2c842c0faaeb4ef34e33890ee88c4cbba

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