RHEL 4 : nss_ldap (RHSA-2006:0719)
High Nessus Plugin ID 23676
SynopsisThe remote Red Hat host is missing a security update.
DescriptionUpdated nss_ldap packages that fix a security flaw are now available for Red Hat Enterprise Linux 4.
This update has been rated as having moderate security impact by the Red Hat Security Response Team.
nss_ldap is a set of C library extensions that allow X.500 and LDAP directory servers to be used as primary sources for aliases, ethers, groups, hosts, networks, protocols, users, RPCs, services, and shadow passwords.
A flaw was found in the way nss_ldap handled a PasswordPolicyResponse control sent by an LDAP server. If an LDAP server responded to an authentication request with a PasswordPolicyResponse control, it was possible for an application using nss_ldap to improperly authenticate certain users. (CVE-2006-5170)
This flaw was only exploitable within applications which did not properly process nss_ldap error messages. Only xscreensaver is currently known to exhibit this behavior.
All users of nss_ldap should upgrade to these updated packages, which contain a backported patch that resolves this issue.
SolutionUpdate the affected nss_ldap package.