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The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2011:1790 :
Updated krb5 packages that fix one security issue are now available
for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having
moderate security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from
the CVE link in the References section.
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).
A NULL pointer dereference flaw was found in the way the MIT Kerberos
KDC processed certain TGS (Ticket-granting Server) requests. A remote,
authenticated attacker could use this flaw to crash the KDC via a
specially crafted TGS request. (CVE-2011-1530)
Red Hat would like to thank the MIT Kerberos project for reporting
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.
See also :
Update the affected krb5 packages.
Risk factor :
Medium / CVSS Base Score : 6.8
CVSS Temporal Score : 5.6
Public Exploit Available : true
Family: Oracle Linux Local Security Checks
Nessus Plugin ID: 68400 ()
Bugtraq ID: 50929
CVE ID: CVE-2011-1530
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