Solution
Please Install the Updated Packages.
Insight
Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third-party, the Key Distribution Center (KDC). The Public Key Cryptography for Initial Authentication in Kerberos (PKINIT) capability provides support for using public-key authentication with Kerberos.
A double-free flaw was found in the way the MIT Kerberos KDC handled initial authentication requests (AS-REQ), when the KDC was configured to provide the PKINIT capability. A remote attacker could use this flaw to cause the KDC daemon to abort by using a specially-crafted AS-REQ request.
(CVE-2011-0284)
All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the krb5kdc daemon will be restarted automatically.
Affected
krb5 on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)
References
Updated on 2015-03-25
Severity
Classification
-
CVE CVE-2011-0284 -
CVSS Base Score: 7.6
AV:N/AC:H/Au:N/C:C/I:C/A:C
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