CVE-2018-16857

NameCVE-2018-16857
DescriptionSamba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of passwords) in a window of more than 3 minutes may not watch for bad passwords at all. The primary risk from this issue is with regards to domains that have been upgraded from Samba 4.8 and earlier. In these cases the manual testing done to confirm an organisation's password policies apply as expected may not have been re-done after the upgrade.
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
samba (PTS)stretch (security), stretch2:4.5.16+dfsg-1+deb9u2fixed
buster2:4.9.5+dfsg-5fixed
buster (security)2:4.9.5+dfsg-5+deb10u1fixed
bullseye, sid2:4.12.5+dfsg-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sambasourcejessie(not affected)
sambasourcestretch(not affected)
sambasource(unstable)2:4.9.2+dfsg-2

Notes

[stretch] - samba <not-affected> (Vulnerable code not present)
[jessie] - samba <not-affected> (Vulnerable code not present)
https://www.samba.org/samba/security/CVE-2018-16857.html

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