CVE-2016-4745

MEDIUM

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.

References

http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html

http://www.securityfocus.com/bid/93055

http://www.securitytracker.com/id/1036858

https://support.apple.com/HT207170

Details

Source: MITRE

Published: 2016-09-25

Updated: 2017-07-30

Type: CWE-200

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM