Description

A 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.

Weaknesses 1

Affected Products 4

References 17

• lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
• seclists.org http://seclists.org/fulldisclosure/2019/Aug/11
• seclists.org http://seclists.org/fulldisclosure/2019/Aug/13
• seclists.org http://seclists.org/fulldisclosure/2019/Aug/14
• seclists.org http://seclists.org/fulldisclosure/2019/Aug/15
• bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860
  Issue TrackingThird Party Advisory
• seclists.org https://seclists.org/bugtraq/2019/Aug/21
• seclists.org https://seclists.org/bugtraq/2019/Aug/22
• seclists.org https://seclists.org/bugtraq/2019/Aug/23
• seclists.org https://seclists.org/bugtraq/2019/Aug/25
• security.gentoo.org https://security.gentoo.org/glsa/202003-52
• support.apple.com https://support.apple.com/HT210346
• support.apple.com https://support.apple.com/HT210348
• support.apple.com https://support.apple.com/HT210351
• support.apple.com https://support.apple.com/HT210353
• samba.org https://www.samba.org/samba/security/CVE-2018-16860.html
  MitigationVendor Advisory
• synology.com https://www.synology.com/security/advisory/Synology_SA_19_23

Remediation