Synopsis: Important: ipa-client security update
Issue Date: 2013-01-23
CVE Numbers: CVE-2012-5484
—
A weakness was found in the way IPA clients communicated with IPA servers when
initially attempting to join IPA domains. As there was no secure way to provide
the IPA server’s Certificate Authority (CA) certificate to the client during a
join, the IPA client enrollment process was susceptible to man-in-the-middle
attacks. This flaw could allow an attacker to obtain access to the IPA server
using the credentials provided by an IPA client, including administrative
access to the entire domain if the join was performed using an administrator’s
credentials. (CVE-2012-5484)
Note: This weakness was only exposed during the initial client join to the
realm, because the IPA client did not yet have the CA certificate of the
server. Once an IPA client has joined the realm and has obtained the CA
certificate of the IPA server, all further communication is secure. If a client
were using the OTP (one-time password) method to join to the realm, an attacker
could only obtain unprivileged access to the server (enough to only join the
realm).
When a fix for this flaw has been applied to the client but not yet the server,
ipa-client-install, in unattended mode, will fail if you do not have the
correct CA certificate locally, noting that you must use the “–force” option
to insecurely obtain the certificate. In interactive mode, the certificate will
try to be obtained securely from LDAP. If this fails, you will be prompted to
insecurely download the certificate via HTTP. In the same situation when using
OTP, LDAP will not be queried and you will be prompted to insecurely download
the certificate via HTTP.
—
SL5
x86_64
ipa-client-2.1.3-5.el5_9.2.x86_64.rpm
ipa-client-debuginfo-2.1.3-5.el5_9.2.x86_64.rpm
i386
ipa-client-2.1.3-5.el5_9.2.i386.rpm
ipa-client-debuginfo-2.1.3-5.el5_9.2.i386.rpm
For dependency resolution the following packages have been added to the SL5
security repo on some older releases:
x86_64
authconfig-5.3.21-7.el5.x86_64.rpm
authconfig-gtk-5.3.21-7.el5.x86_64.rpm
certmonger-0.50-3.el5.x86_64.rpm
curl-7.15.5-15.el5.i386.rpm
curl-7.15.5-15.el5.x86_64.rpm
curl-devel-7.15.5-15.el5.i386.rpm
curl-devel-7.15.5-15.el5.x86_64.rpm
libipa_hbac-1.5.1-58.el5.i386.rpm
libipa_hbac-1.5.1-58.el5.x86_64.rpm
libipa_hbac-devel-1.5.1-58.el5.i386.rpm
libipa_hbac-devel-1.5.1-58.el5.x86_64.rpm
libipa_hbac-python-1.5.1-58.el5.x86_64.rpm
libtdb-1.2.10-1.el5.i386.rpm
libtdb-1.2.10-1.el5.x86_64.rpm
libtdb-devel-1.2.10-1.el5.i386.rpm
libtdb-devel-1.2.10-1.el5.x86_64.rpm
policycoreutils-1.33.12-14.8.el5.x86_64.rpm
policycoreutils-gui-1.33.12-14.8.el5.x86_64.rpm
policycoreutils-newrole-1.33.12-14.8.el5.x86_64.rpm
shadow-utils-4.0.17-21.el5.x86_64.rpm
sssd-1.5.1-58.el5.x86_64.rpm
sssd-client-1.5.1-58.el5.i386.rpm
sssd-client-1.5.1-58.el5.x86_64.rpm
sssd-tools-1.5.1-58.el5.x86_64.rpm
xmlrpc-c-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-1.16.24-1206.1840.4.el5.x86_64.rpm
xmlrpc-c-apps-1.16.24-1206.1840.4.el5.x86_64.rpm
xmlrpc-c-c++-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-c++-1.16.24-1206.1840.4.el5.x86_64.rpm
xmlrpc-c-client-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-client++-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-client-1.16.24-1206.1840.4.el5.x86_64.rpm
xmlrpc-c-client++-1.16.24-1206.1840.4.el5.x86_64.rpm
xmlrpc-c-devel-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-devel-1.16.24-1206.1840.4.el5.x86_64.rpm
i386
authconfig-5.3.21-7.el5.i386.rpm
authconfig-gtk-5.3.21-7.el5.i386.rpm
certmonger-0.50-3.el5.i386.rpm
curl-7.15.5-15.el5.i386.rpm
curl-devel-7.15.5-15.el5.i386.rpm
libipa_hbac-1.5.1-58.el5.i386.rpm
libipa_hbac-devel-1.5.1-58.el5.i386.rpm
libipa_hbac-python-1.5.1-58.el5.i386.rpm
libtdb-1.2.10-1.el5.i386.rpm
libtdb-devel-1.2.10-1.el5.i386.rpm
policycoreutils-1.33.12-14.8.el5.i386.rpm
policycoreutils-gui-1.33.12-14.8.el5.i386.rpm
policycoreutils-newrole-1.33.12-14.8.el5.i386.rpm
shadow-utils-4.0.17-21.el5.i386.rpm
sssd-1.5.1-58.el5.i386.rpm
sssd-client-1.5.1-58.el5.i386.rpm
sssd-tools-1.5.1-58.el5.i386.rpm
xmlrpc-c-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-apps-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-c++-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-client-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-client++-1.16.24-1206.1840.4.el5.i386.rpm
xmlrpc-c-devel-1.16.24-1206.1840.4.el5.i386.rpm
– Scientific Linux Development Team
