CentOS Update for krb5-devel CESA-2015:0794 centos6

Published: 2015-04-10 05:11:41
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:S/C:C/I:C/A:C

Detection Type:
Linux Distribution Package

Summary:
Check the version of krb5-devel

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. The following security issues are fixed with this release: A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. (CVE-2014-5355) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422) Red Hat would like to thank the MIT Kerberos project for reporting CVE-2014-5352, CVE-2014-9421, and CVE-2014-9422. The MIT Kerberos project acknowledges Nico Williams for assisting with the analysis of CVE-2014-5352. All krb5 users are advised to upgrade to these updated Linux Distribution Packages, which contain backported patches to correct these issues.

Affected Versions:
krb5-devel on CentOS 6

Recommendations:
Please install the updated Linux Distribution Packages.

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2014-5352
https://nvd.nist.gov/vuln/detail/CVE-2014-5353
https://nvd.nist.gov/vuln/detail/CVE-2014-5355
https://nvd.nist.gov/vuln/detail/CVE-2014-9421
https://nvd.nist.gov/vuln/detail/CVE-2014-9422

References:

http://lists.centos.org/pipermail/centos-announce/2015-April/021058.html

Severity
High
CVSS Score
9.0
Published
2015-04-10
Modified
2019-03-08
Category
CentOS Local Security Checks

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