Family: Red Hat Local Security Checks --> Category: infos
RHSA-2004-448: krb Vulnerability Scan
Vulnerability Scan Summary
Check for the version of the krb packages
Detailed Explanation for this Vulnerability Test
Updated Kerberos (krb5) packages that correct double-free and ASN.1
parsing bugs are now available for Red Hat Enterprise Linux.
Kerberos is a networked authentication system that uses a trusted third
party (a KDC) to authenticate clients and servers to each other.
Several double-free bugs were found in the Kerberos 5 KDC and libraries. A
remote attacker could potentially exploit these flaws to execute arbitrary
code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CVE-2004-0642 and CVE-2004-0643 to these issues.
A double-free bug was also found in the krb524 server (CVE-2004-0772),
however this issue was fixed for Red Hat Enterprise Linux 2.1 users by a
previous erratum, RHSA-2003:052.
An infinite loop bug was found in the Kerberos 5 ASN.1 decoder library. A
remote attacker may be able to trigger this flaw and cause a denial of
service. The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2004-0644 to this issue.
All users of krb5 should upgrade to these updated packages, which contain
backported security patches to resolve these issues.
Solution : http://rhn.redhat.com/errata/RHSA-2004-448.html
Threat Level: High
Click HERE for more information and discussions on this network vulnerability scan.