Low CentOS sssd Security Update

Metadata

medium
6.8
libipa_hbac-1.12.4-47.el6_7.4.i686.rpm, libipa_hbac-1.12.4-47.el6_7.4.x86_64.rpm, libipa_hbac-devel-1.12.4-47.el6_7.4.i686.rpm, libipa_hbac-devel-1.12.4-47.el6_7.4.x86_64.rpm, libipa_hbac-python-1.12.4-47.el6_7.4.i686.rpm, libipa_hbac-python-1.12.4-47.el6_7.4.x86_64.rpm, libsss_idmap-1.12.4-47.el6_7.4.i686.rpm, libsss_idmap-1.12.4-47.el6_7.4.x86_64.rpm, libsss_idmap-devel-1.12.4-47.el6_7.4.i686.rpm, libsss_idmap-devel-1.12.4-47.el6_7.4.x86_64.rpm, libsss_nss_idmap-1.12.4-47.el6_7.4.i686.rpm, libsss_nss_idmap-1.12.4-47.el6_7.4.x86_64.rpm, libsss_nss_idmap-devel-1.12.4-47.el6_7.4.i686.rpm, libsss_nss_idmap-devel-1.12.4-47.el6_7.4.x86_64.rpm, libsss_nss_idmap-python-1.12.4-47.el6_7.4.i686.rpm, libsss_nss_idmap-python-1.12.4-47.el6_7.4.x86_64.rpm, libsss_simpleifp-1.12.4-47.el6_7.4.i686.rpm, libsss_simpleifp-1.12.4-47.el6_7.4.x86_64.rpm, libsss_simpleifp-devel-1.12.4-47.el6_7.4.i686.rpm, libsss_simpleifp-devel-1.12.4-47.el6_7.4.x86_64.rpm, python-sssdconfig-1.12.4-47.el6_7.4.noarch.rpm, sssd-1.12.4-47.el6_7.4.i686.rpm, sssd-1.12.4-47.el6_7.4.src.rpm, sssd-1.12.4-47.el6_7.4.x86_64.rpm, sssd-ad-1.12.4-47.el6_7.4.i686.rpm, sssd-ad-1.12.4-47.el6_7.4.x86_64.rpm, sssd-client-1.12.4-47.el6_7.4.i686.rpm, sssd-client-1.12.4-47.el6_7.4.x86_64.rpm, sssd-common-1.12.4-47.el6_7.4.i686.rpm, sssd-common-1.12.4-47.el6_7.4.x86_64.rpm, sssd-common-pac-1.12.4-47.el6_7.4.i686.rpm, sssd-common-pac-1.12.4-47.el6_7.4.x86_64.rpm, sssd-dbus-1.12.4-47.el6_7.4.i686.rpm, sssd-dbus-1.12.4-47.el6_7.4.x86_64.rpm, sssd-ipa-1.12.4-47.el6_7.4.i686.rpm, sssd-ipa-1.12.4-47.el6_7.4.x86_64.rpm, sssd-krb5-1.12.4-47.el6_7.4.i686.rpm, sssd-krb5-1.12.4-47.el6_7.4.x86_64.rpm, sssd-krb5-common-1.12.4-47.el6_7.4.i686.rpm, sssd-krb5-common-1.12.4-47.el6_7.4.x86_64.rpm, sssd-ldap-1.12.4-47.el6_7.4.i686.rpm, sssd-ldap-1.12.4-47.el6_7.4.x86_64.rpm, sssd-proxy-1.12.4-47.el6_7.4.i686.rpm, sssd-proxy-1.12.4-47.el6_7.4.x86_64.rpm, sssd-tools-1.12.4-47.el6_7.4.i686.rpm, sssd-tools-1.12.4-47.el6_7.4.x86_64.rpm
CVE-2015-5292
rhn.redhat.com, lists.centos.org
2015-11-10
2017-07-27 19:10
ALAS-2016-635
Low CentOS sssd Security Update
CVE-2015-5292 sssd
CVE-2015-5292
2017-04-01 19:09
2017-01-05 20:13

Description


Updated sssd packages that fix one security issue and several bugs are now
available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Low security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

The System Security Services Daemon (SSSD) service provides a set of
daemons to manage access to remote directories and authentication
mechanisms. It also provides the Name Service Switch (NSS) and the
Pluggable Authentication Modules (PAM) interfaces toward the system, and a
pluggable back-end system to connect to multiple different account sources.

It was found that SSSD's Privilege Attribute Certificate (PAC) responder
plug-in would leak a small amount of memory on each authentication request.
A remote attacker could potentially use this flaw to exhaust all available
memory on the system by making repeated requests to a Kerberized daemon
application configured to authenticate using the PAC responder plug-in.
(CVE-2015-5292)

This update also fixes the following bugs:

* Previously, SSSD did not correctly handle sudo rules that applied to
groups with names containing special characters, such as the "(" opening
parenthesis sign. Consequently, SSSD skipped such sudo rules. The internal
sysdb search has been modified to escape special characters when searching
for objects to which sudo rules apply. As a result, SSSD applies the
described sudo rules as expected. (BZ#1258398)

* Prior to this update, SSSD did not correctly handle group names
containing special Lightweight Directory Access Protocol (LDAP) characters,
such as the "(" or ")" parenthesis signs. When a group name contained one
or more such characters, the internal cache cleanup operation failed with
an I/O error. With this update, LDAP special characters in the
Distinguished Name (DN) of a cache entry are escaped before the cleanup
operation starts. As a result, the cleanup operation completes successfully
in the described situation. (BZ#1264098)

* Applications performing Kerberos authentication previously increased the
memory footprint of the Kerberos plug-in that parses the Privilege
Attribute Certificate (PAC) information. The plug-in has been updated to
free the memory it allocates, thus fixing this bug. (BZ#1268783)

* Previously, when malformed POSIX attributes were defined in an Active
Directory (AD) LDAP server, SSSD unexpectedly switched to offline mode.
This update relaxes certain checks for AD POSIX attribute validity. As a
result, SSSD now works as expected even when malformed POSIX attributes are
present in AD and no longer enters offline mode in the described situation.
(BZ#1268784)

All sssd users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. After installing the
update, the sssd service will be restarted automatically. Additionally, all
running applications using the PAC responder plug-in must be restarted for
the changes to take effect.
Please see https://www.redhat.com/footer/terms-of-use.html

Am I vulnerable?

The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

Or, you can just let us figure it out for you! Appcanary continously monitor your installed packages, and tell you if any of them are vulnerable.

Sign up for monitoring

Affected package information

Release Package Patched in
6 libipa_hbac libipa_hbac-1.12.4-47.el6_7.4.i686.rpm
libipa_hbac libipa_hbac-1.12.4-47.el6_7.4.x86_64.rpm
libipa_hbac-devel libipa_hbac-devel-1.12.4-47.el6_7.4.i686.rpm
libipa_hbac-devel libipa_hbac-devel-1.12.4-47.el6_7.4.x86_64.rpm
libipa_hbac-python libipa_hbac-python-1.12.4-47.el6_7.4.i686.rpm
libipa_hbac-python libipa_hbac-python-1.12.4-47.el6_7.4.x86_64.rpm
libsss_idmap libsss_idmap-1.12.4-47.el6_7.4.i686.rpm
libsss_idmap libsss_idmap-1.12.4-47.el6_7.4.x86_64.rpm
libsss_idmap-devel libsss_idmap-devel-1.12.4-47.el6_7.4.i686.rpm
libsss_idmap-devel libsss_idmap-devel-1.12.4-47.el6_7.4.x86_64.rpm
libsss_nss_idmap libsss_nss_idmap-1.12.4-47.el6_7.4.i686.rpm
libsss_nss_idmap libsss_nss_idmap-1.12.4-47.el6_7.4.x86_64.rpm
libsss_nss_idmap-devel libsss_nss_idmap-devel-1.12.4-47.el6_7.4.i686.rpm
libsss_nss_idmap-devel libsss_nss_idmap-devel-1.12.4-47.el6_7.4.x86_64.rpm
libsss_nss_idmap-python libsss_nss_idmap-python-1.12.4-47.el6_7.4.i686.rpm
libsss_nss_idmap-python libsss_nss_idmap-python-1.12.4-47.el6_7.4.x86_64.rpm
libsss_simpleifp libsss_simpleifp-1.12.4-47.el6_7.4.i686.rpm
libsss_simpleifp libsss_simpleifp-1.12.4-47.el6_7.4.x86_64.rpm
libsss_simpleifp-devel libsss_simpleifp-devel-1.12.4-47.el6_7.4.i686.rpm
libsss_simpleifp-devel libsss_simpleifp-devel-1.12.4-47.el6_7.4.x86_64.rpm
python-sssdconfig python-sssdconfig-1.12.4-47.el6_7.4.noarch.rpm
sssd sssd-1.12.4-47.el6_7.4.i686.rpm
sssd sssd-1.12.4-47.el6_7.4.src.rpm
sssd sssd-1.12.4-47.el6_7.4.x86_64.rpm
sssd-ad sssd-ad-1.12.4-47.el6_7.4.i686.rpm
sssd-ad sssd-ad-1.12.4-47.el6_7.4.x86_64.rpm
sssd-client sssd-client-1.12.4-47.el6_7.4.i686.rpm
sssd-client sssd-client-1.12.4-47.el6_7.4.x86_64.rpm
sssd-common sssd-common-1.12.4-47.el6_7.4.i686.rpm
sssd-common sssd-common-1.12.4-47.el6_7.4.x86_64.rpm
sssd-common-pac sssd-common-pac-1.12.4-47.el6_7.4.i686.rpm
sssd-common-pac sssd-common-pac-1.12.4-47.el6_7.4.x86_64.rpm
sssd-dbus sssd-dbus-1.12.4-47.el6_7.4.i686.rpm
sssd-dbus sssd-dbus-1.12.4-47.el6_7.4.x86_64.rpm
sssd-ipa sssd-ipa-1.12.4-47.el6_7.4.i686.rpm
sssd-ipa sssd-ipa-1.12.4-47.el6_7.4.x86_64.rpm
sssd-krb5 sssd-krb5-1.12.4-47.el6_7.4.i686.rpm
sssd-krb5 sssd-krb5-1.12.4-47.el6_7.4.x86_64.rpm
sssd-krb5-common sssd-krb5-common-1.12.4-47.el6_7.4.i686.rpm
sssd-krb5-common sssd-krb5-common-1.12.4-47.el6_7.4.x86_64.rpm
sssd-ldap sssd-ldap-1.12.4-47.el6_7.4.i686.rpm
sssd-ldap sssd-ldap-1.12.4-47.el6_7.4.x86_64.rpm
sssd-proxy sssd-proxy-1.12.4-47.el6_7.4.i686.rpm
sssd-proxy sssd-proxy-1.12.4-47.el6_7.4.x86_64.rpm
sssd-tools sssd-tools-1.12.4-47.el6_7.4.i686.rpm
sssd-tools sssd-tools-1.12.4-47.el6_7.4.x86_64.rpm