Information disclosure in Apple Mac OS X
CVE-2016-4745
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1036858 (vdb-entry)
- lists.apple.com/archives/security-announce/2016/Sep/msg00006.html (vendor-advisory, Mailing List, Vendor Advisory)
- www.securityfocus.com/bid/93055 (vdb-entry)
- support.apple.com/HT207170 (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-4745?
- CVE-2016-4745 is a medium-severity vulnerability in Apple Mac OS X, classified under Information Disclosure. CVSS score: 5.3/10. Published 2016-09-25.
- How severe is CVE-2016-4745?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2016-4745 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.