CVE Database›CVE-2015-2694

CVE-2015-2694

krb5: issues in OTP and PKINIT kdcpreauth modules leading to requires_preauth bypass

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Severity

Moderate

Red Hat Product Security

5.8

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 · 5.8
AV:N/AC:M/Au:N/C:P/I:P/A:N

CWE not specified