RHEL 6 : krb5 (RHSA-2011:1379)

high Nessus Plugin ID 56552
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VPR Score: 3.6

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate 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).

Multiple NULL pointer dereference and assertion failure flaws were found in the MIT Kerberos KDC when it was configured to use an LDAP (Lightweight Directory Access Protocol) or Berkeley Database (Berkeley DB) back end. A remote attacker could use these flaws to crash the KDC. (CVE-2011-1527, CVE-2011-1528, CVE-2011-1529)

Red Hat would like to thank the MIT Kerberos project for reporting the CVE-2011-1527 issue. Upstream acknowledges Andrej Ota as the original reporter of CVE-2011-1527.

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 packages.

See Also

https://access.redhat.com/security/cve/cve-2011-1527

https://access.redhat.com/security/cve/cve-2011-1528

https://access.redhat.com/security/cve/cve-2011-1529

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt

https://access.redhat.com/errata/RHSA-2011:1379

Plugin Details

Severity: High

ID: 56552

File Name: redhat-RHSA-2011-1379.nasl

Version: 1.24

Type: local

Agent: unix

Published: 10/19/2011

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 3.6

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:krb5-debuginfo, p-cpe:/a:redhat:enterprise_linux:krb5-devel, p-cpe:/a:redhat:enterprise_linux:krb5-libs, p-cpe:/a:redhat:enterprise_linux:krb5-pkinit-openssl, p-cpe:/a:redhat:enterprise_linux:krb5-server, p-cpe:/a:redhat:enterprise_linux:krb5-server-ldap, p-cpe:/a:redhat:enterprise_linux:krb5-workstation, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.1

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 10/18/2011

Vulnerability Publication Date: 10/20/2011

Reference Information

CVE: CVE-2011-1527, CVE-2011-1528, CVE-2011-1529

BID: 50273

RHSA: 2011:1379