CVE-2017-7562
krb5: Authentication bypass by improper validation of certificate EKU and SAN
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · August 25, 2017
Updated · August 5, 2026
Description
An authentication bypass flaw was found in the way krb5's certauth interface handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 6.5CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE-295 · Improper Certificate Validation