Synopsis

Moderate: ipa security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

Updated ipa packages that fix two security issues and several bugs are now
available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

Red Hat Identity Management (IdM) is a centralized authentication, identity
management, and authorization solution for both traditional and cloud-based
enterprise environments.

Description

Two cross-site scripting (XSS) flaws were found in jQuery, which impacted
the Identity Management web administrative interface, and could allow an
authenticated user to inject arbitrary HTML or web script into the
interface. (CVE-2010-5312, CVE-2012-6662)

Note: The IdM version provided by this update no longer uses jQuery.

Bug fixes:

• The ipa-server-install, ipa-replica-install, and ipa-client-install

utilities are not supported on machines running in FIPS-140 mode.
Previously, IdM did not warn users about this. Now, IdM does not allow
running the utilities in FIPS-140 mode, and displays an explanatory
message. (BZ#1131571)

• If an Active Directory (AD) server was specified or discovered

automatically when running the ipa-client-install utility, the utility
produced a traceback instead of informing the user that an IdM server is
expected in this situation. Now, ipa-client-install detects the AD server
and fails with an explanatory message. (BZ#1132261)

• When IdM servers were configured to require the TLS protocol version 1.1

(TLSv1.1) or later in the httpd server, the ipa utility failed. With this
update, running ipa works as expected with TLSv1.1 or later. (BZ#1154687)

• In certain high-load environments, the Kerberos authentication step of

the IdM client installer can fail. Previously, the entire client
installation failed in this situation. This update modifies
ipa-client-install to prefer the TCP protocol over the UDP protocol and to
retry the authentication attempt in case of failure. (BZ#1161722)

• If ipa-client-install updated or created the /etc/nsswitch.conf file, the

sudo utility could terminate unexpectedly with a segmentation fault. Now,
ipa-client-install puts a new line character at the end of nsswitch.conf if
it modifies the last line of the file, fixing this bug. (BZ#1185207)

• The ipa-client-automount utility failed with the "UNWILLING_TO_PERFORM"

LDAP error when the nsslapd-minssf Red Hat Directory Server configuration
parameter was set to "1". This update modifies ipa-client-automount to use
encrypted connection for LDAP searches by default, and the utility now
finishes successfully even with nsslapd-minssf specified. (BZ#1191040)

• If installing an IdM server failed after the Certificate Authority (CA)

installation, the "ipa-server-install --uninstall" command did not perform
a proper cleanup. After the user issued "ipa-server-install --uninstall"
and then attempted to install the server again, the installation failed.
Now, "ipa-server-install --uninstall" removes the CA-related files in the
described situation, and ipa-server-install no longer fails with the
mentioned error message. (BZ#1198160)

• Running ipa-client-install added the "sss" entry to the sudoers line in

nsswitch.conf even if "sss" was already configured and the entry was
present in the file. Duplicate "sss" then caused sudo to become
unresponsive. Now, ipa-client-install no longer adds "sss" if it is already
present in nsswitch.conf. (BZ#1198339)

• After running ipa-client-install, it was not possible to log in using SSH

under certain circumstances. Now, ipa-client-install no longer corrupts the
sshd_config file, and the sshd service can start as expected, and logging
in using SSH works in the described situation. (BZ#1201454)

• An incorrect definition of the dc attribute in the

/usr/share/ipa/05rfc2247.ldif file caused bogus error messages to be
returned during migration. The attribute has been fixed, but the bug
persists if the copy-schema-to-ca.py script was run on Red Hat Enterprise
Linux 6.6 prior to running it on Red Hat Enterprise Linux 6.7. To work
around this problem, manually copy /usr/share/ipa/schema/05rfc2247.ldif to
/etc/dirsrv/slapd-PKI-IPA/schema/ and restart IdM. (BZ#1220788)

All ipa users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 1132261 - ipa-client-install failing produces a traceback instead of useful error message
• BZ - 1146870 - ipa-client-install fails with "KerbTransport instance has no attribute '__conn'" traceback
• BZ - 1154687 - POODLE: force using safe ciphers (non-SSLv3) in IPA client and server
• BZ - 1166041 - CVE-2010-5312 jquery-ui: XSS vulnerability in jQuery.ui.dialog title option
• BZ - 1166064 - CVE-2012-6662 jquery-ui: XSS vulnerability in default content in Tooltip widget
• BZ - 1185207 - ipa-client dont end new line character in /etc/nsswitch.conf
• BZ - 1198339 - ipa-client-install adds extra sss to sudoers in nsswitch.conf
• BZ - 1201454 - ipa breaks sshd config
• BZ - 1205660 - ipa-client rpm should require keyutils
• BZ - 1207649 - host certificate not issued to client during ipa-client-install
• BZ - 1220788 - request to backport ticket 3578 to RHEL6. Provoking migration to 7.1 issues.

CVEs

• CVE-2010-5312
• CVE-2012-6662

References