Vulnerability Description
The Kerberos 5 (aka krb5) PAM module in Apple OS X before 10.12 does not use constant-time operations for determining username validity, which makes it easier for remote attackers to enumerate user accounts via a timing side-channel attack.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Mac Os X | <= 10.11.6 |
Related Weaknesses (CWE)
References
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.htmlMailing ListVendor Advisory
- http://www.securityfocus.com/bid/93055
- http://www.securitytracker.com/id/1036858
- https://support.apple.com/HT207170Vendor Advisory
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.htmlMailing ListVendor Advisory
- http://www.securityfocus.com/bid/93055
- http://www.securitytracker.com/id/1036858
- https://support.apple.com/HT207170Vendor Advisory
FAQ
What is CVE-2016-4745?
CVE-2016-4745 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The Kerberos 5 (aka krb5) PAM module in Apple OS X before 10.12 does not use constant-time operations for determining username validity, which makes it easier for remote attackers to enumerate user ac...
How severe is CVE-2016-4745?
CVE-2016-4745 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-4745?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Mac Os X.