CVE-2018-16857

Samba 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.

• CWE-358
• CWE-358

• http://www.securityfocus.com/bid/106024Third Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16857Issue Tracking, Mitigation, Third Party Advisory
• https://security.gentoo.org/glsa/202003-52
• https://security.netapp.com/advisory/ntap-20181127-0001/Third Party Advisory
• https://www.samba.org/samba/security/CVE-2018-16857.htmlMitigation, Patch, Vendor Advisory
• http://www.securityfocus.com/bid/106024Third Party Advisory, VDB Entry
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16857Issue Tracking, Mitigation, Third Party Advisory
• https://security.gentoo.org/glsa/202003-52
• https://security.netapp.com/advisory/ntap-20181127-0001/Third Party Advisory
• https://www.samba.org/samba/security/CVE-2018-16857.htmlMitigation, Patch, Vendor Advisory

Published

Nov 28, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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