Detections
Analytics
CentOS 5 : krb5 (CESA-2011:0199)
medium Nessus Plugin ID 53418
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Synopsis
The remote CentOS host is missing one or more security updates.Description
Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links 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 principal names that were not null terminated, when the KDC was configured to use an LDAP back end. A remote attacker could use this flaw to crash the KDC via a specially crafted request.
(CVE-2011-0282)
A denial of service flaw was found in the way the MIT Kerberos KDC processed certain principal names when the KDC was configured to use an LDAP back end. A remote attacker could use this flaw to cause the KDC to hang via a specially crafted request. (CVE-2011-0281)
Red Hat would like to thank the MIT Kerberos Team for reporting these issues. Upstream acknowledges Kevin Longfellow of Oracle Corporation as the original reporter of the CVE-2011-0281 issue.
All krb5 users should upgrade to these updated packages, which contain a backported patch to correct these issues. After installing the updated packages, the krb5kdc daemon will be restarted automatically.
Solution
Update the affected krb5 packages.See Also
Plugin Details
Severity: Medium
ID: 53418
File Name: centos_RHSA-2011-0199.nasl
Version: 1.13
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 4/15/2011
Updated: 1/4/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Vulnerability Information
CPE: p-cpe:/a:centos:centos:krb5-workstation, p-cpe:/a:centos:centos:krb5-devel, p-cpe:/a:centos:centos:krb5-libs, p-cpe:/a:centos:centos:krb5-server, cpe:/o:centos:centos:5, p-cpe:/a:centos:centos:krb5-server-ldap
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 4/14/2011
Vulnerability Publication Date: 2/10/2011
Reference Information
CVE: CVE-2010-4022, CVE-2011-0281, CVE-2011-0282, CVE-2011-0283
RHSA: 2011:0199