Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 4.8.0, < 4.8.12 |
| Heimdal Project | Heimdal | >= 0.8, <= 7.5.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
- http://seclists.org/fulldisclosure/2019/Aug/11
- http://seclists.org/fulldisclosure/2019/Aug/13
- http://seclists.org/fulldisclosure/2019/Aug/14
- http://seclists.org/fulldisclosure/2019/Aug/15
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860Issue TrackingThird Party Advisory
- https://seclists.org/bugtraq/2019/Aug/21
- https://seclists.org/bugtraq/2019/Aug/22
- https://seclists.org/bugtraq/2019/Aug/23
- https://seclists.org/bugtraq/2019/Aug/25
- https://security.gentoo.org/glsa/202003-52
- https://support.apple.com/HT210346
- https://support.apple.com/HT210348
- https://support.apple.com/HT210351
- https://support.apple.com/HT210353
FAQ
What is CVE-2018-16860?
CVE-2018-16860 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 m...
How severe is CVE-2018-16860?
CVE-2018-16860 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16860?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba, Heimdal Project Heimdal.