Synopsis: Important: ipa 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).
This update must be installed on both the IPA client and IPA server. When this
update has been applied to the client but not 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.
After installing the update, changes in LDAP are handled by ipa-ldap-updater
automatically and are effective immediately.
—
SL6
x86_64
ipa-client-2.2.0-17.el6_3.1.x86_64.rpm
ipa-debuginfo-2.2.0-17.el6_3.1.x86_64.rpm
ipa-python-2.2.0-17.el6_3.1.x86_64.rpm
ipa-admintools-2.2.0-17.el6_3.1.x86_64.rpm
ipa-server-2.2.0-17.el6_3.1.x86_64.rpm
ipa-server-selinux-2.2.0-17.el6_3.1.x86_64.rpm
i386
ipa-client-2.2.0-17.el6_3.1.i686.rpm
ipa-debuginfo-2.2.0-17.el6_3.1.i686.rpm
ipa-python-2.2.0-17.el6_3.1.i686.rpm
ipa-admintools-2.2.0-17.el6_3.1.i686.rpm
ipa-server-2.2.0-17.el6_3.1.i686.rpm
ipa-server-selinux-2.2.0-17.el6_3.1.i686.rpm
For dependency resolution the following packages have been added to the SL5
security repo on some older releases:
x86_64
certmonger-0.56-1.el6.x86_64.rpm
libipa_hbac-1.8.0-32.el6.i686.rpm
libipa_hbac-1.8.0-32.el6.x86_64.rpm
libipa_hbac-devel-1.8.0-32.el6.i686.rpm
libipa_hbac-devel-1.8.0-32.el6.x86_64.rpm
libipa_hbac-python-1.8.0-32.el6.x86_64.rpm
libsss_autofs-1.8.0-32.el6.x86_64.rpm
mod_auth_kerb-5.4-9.el6.x86_64.rpm
pki-ca-9.0.3-24.el6.noarch.rpm
pki-common-9.0.3-24.el6.noarch.rpm
pki-common-javadoc-9.0.3-24.el6.noarch.rpm
pki-java-tools-9.0.3-24.el6.noarch.rpm
pki-java-tools-javadoc-9.0.3-24.el6.noarch.rpm
pki-native-tools-9.0.3-24.el6.x86_64.rpm
pki-selinux-9.0.3-24.el6.noarch.rpm
pki-setup-9.0.3-24.el6.noarch.rpm
pki-silent-9.0.3-24.el6.noarch.rpm
pki-symkey-9.0.3-24.el6.x86_64.rpm
pki-util-9.0.3-24.el6.noarch.rpm
pki-util-javadoc-9.0.3-24.el6.noarch.rpm
python-memcached-1.43-6.el6.noarch.rpm
slapi-nis-0.40-1.el6.x86_64.rpm
sssd-1.8.0-32.el6.x86_64.rpm
sssd-client-1.8.0-32.el6.i686.rpm
sssd-client-1.8.0-32.el6.x86_64.rpm
sssd-tools-1.8.0-32.el6.x86_64.rpm
i386
certmonger-0.56-1.el6.i686.rpm
libipa_hbac-1.8.0-32.el6.i686.rpm
libipa_hbac-devel-1.8.0-32.el6.i686.rpm
libipa_hbac-python-1.8.0-32.el6.i686.rpm
libsss_autofs-1.8.0-32.el6.i686.rpm
mod_auth_kerb-5.4-9.el6.i686.rpm
pki-ca-9.0.3-24.el6.noarch.rpm
pki-common-9.0.3-24.el6.noarch.rpm
pki-common-javadoc-9.0.3-24.el6.noarch.rpm
pki-java-tools-9.0.3-24.el6.noarch.rpm
pki-java-tools-javadoc-9.0.3-24.el6.noarch.rpm
pki-native-tools-9.0.3-24.el6.i686.rpm
pki-selinux-9.0.3-24.el6.noarch.rpm
pki-setup-9.0.3-24.el6.noarch.rpm
pki-silent-9.0.3-24.el6.noarch.rpm
pki-symkey-9.0.3-24.el6.i686.rpm
pki-util-9.0.3-24.el6.noarch.rpm
pki-util-javadoc-9.0.3-24.el6.noarch.rpm
python-memcached-1.43-6.el6.noarch.rpm
slapi-nis-0.40-1.el6.i686.rpm
sssd-1.8.0-32.el6.i686.rpm
sssd-client-1.8.0-32.el6.i686.rpm
sssd-tools-1.8.0-32.el6.i686.rpm
– Scientific Linux Development Team
