How to Buy
This script is Copyright (C) 2004-2014 Tenable Network Security, Inc.
The remote Red Hat host is missing one or more security updates.
Updated Kerberos 5 (krb5) packages which correct buffer overflows in
the krb5_aname_to_localname function are now available.
Kerberos is a network authentication system.
Bugs have been fixed in the krb5_aname_to_localname library function.
Specifically, buffer overflows were possible for all Kerberos versions
up to and including 1.3.3. The krb5_aname_to_localname function
translates a Kerberos principal name to a local account name,
typically a UNIX username. This function is frequently used when
performing authorization checks.
If configured with mappings from particular Kerberos principals to
particular UNIX user names, certain functions called by
krb5_aname_to_localname will not properly check the lengths of buffers
used to store portions of the principal name. If configured to map
principals to user names using rules, krb5_aname_to_localname would
consistently write one byte past the end of a buffer allocated from
the heap. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2004-0523 to this issue.
Only configurations which enable the explicit mapping or rules-based
mapping functionality of krb5_aname_to_localname() are vulnerable.
These configurations are not the default.
Users of Kerberos are advised to upgrade to these erratum packages
which contain backported security patches to correct these issues.
See also :
Update the affected packages.
Risk factor :
Critical / CVSS Base Score : 10.0
Family: Red Hat Local Security Checks
Nessus Plugin ID: 12502 ()
CVE ID: CVE-2004-0523
Nessus Professional: Scan unlimited IPs, run compliance checks & moreNessus Cloud: The power of Nessus for teams – from the cloud
The cookie settings on this website are set to 'allow all cookies' to give you the very best website experience. If you continue without changing these settings, you consent to this - but if you want, you can opt out of all cookies by clicking below.