CVE-2015-2694
krb5: issues in OTP and PKINIT kdcpreauth modules leading to requires_preauth bypass
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · April 27, 2015
Updated · November 21, 2025
Description
A flaw was found in the OTP kdcpreauth module of MIT Kerberos. A remote attacker could use this flaw to bypass the requires_preauth flag on a client principal and obtain a ciphertext encrypted in the principal's long-term key. This ciphertext could be used to conduct an off-line dictionary attack against the user's password.
Statement
This issue does not affect the version of krb5 package as shipped with Red Hat Enterprise Linux 5 and 6.
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 2.0 · 5.8AV:N/AC:M/Au:N/C:P/I:P/A:N
CWE not specified