GLSA-200409-09 : MIT krb5: Multiple vulnerabilities
High Nessus Plugin ID 14666
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200409-09 (MIT krb5: Multiple vulnerabilities)
The implementation of the Key Distribution Center (KDC) and the MIT krb5 library contain double-free vulnerabilities, making client programs as well as application servers vulnerable.
The ASN.1 decoder library is vulnerable to a denial of service attack, including the KDC.
The double-free vulnerabilities could allow an attacker to execute arbitrary code on a KDC host and hosts running krb524d or vulnerable services. In the case of a KDC host, this can lead to a compromise of the entire Kerberos realm. Furthermore, an attacker impersonating a legitimate KDC or application server can potentially execute arbitrary code on authenticating clients.
An attacker can cause a denial of service for a KDC or application server and clients, the latter if impersonating a legitimate KDC or application server.
There is no known workaround at this time.
SolutionAll mit-krb5 users should upgrade to the latest stable version:
# emerge sync # emerge -pv '>=app-crypt/mit-krb5-1.3.4' # emerge '>=app-crypt/mit-krb5-1.3.4'