Red Hat: 2011:0975-01: sssd: Low Advisory
Summary
The System Security Services Daemon (SSSD) provides a set of daemons to
manage access to remote directories and authentication mechanisms. It
provides an NSS and PAM interface toward the system and a pluggable
back-end system to connect to multiple different account sources. It is
also the basis to provide client auditing and policy services for projects
such as FreeIPA.
A flaw was found in the SSSD PAM responder that could allow a local
attacker to force SSSD to enter an infinite loop via a carefully-crafted
packet. With SSSD unresponsive, legitimate users could be denied the
ability to log in to the system. (CVE-2010-4341)
Red Hat would like to thank Sebastian Krahmer for reporting this issue.
These updated sssd packages include a number of bug fixes and enhancements.
Space precludes documenting all of these changes in this advisory. Refer to
the Red Hat Enterprise Linux 5.7 Technical Notes for information about
these changes:
https://access.redhat.com/search/
nical_Notes/sssd.html#RHSA-2011-0975
All sssd users are advised to upgrade to these updated sssd packages, which
upgrade SSSD to upstream version 1.5.1 to correct this issue, and fix the
bugs and add the enhancements noted in the Technical Notes.
Summary
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
References
https://www.redhat.com/security/data/cve/CVE-2010-4341.html https://access.redhat.com/security/updates/classification/#low https://fedoraproject.org/wiki/Infrastructure/Fedorahosted-retirement https://access.redhat.com/search/
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
sssd-1.5.1-37.el5.i386.rpm
sssd-client-1.5.1-37.el5.i386.rpm
sssd-debuginfo-1.5.1-37.el5.i386.rpm
sssd-tools-1.5.1-37.el5.i386.rpm
x86_64:
sssd-1.5.1-37.el5.x86_64.rpm
sssd-client-1.5.1-37.el5.i386.rpm
sssd-client-1.5.1-37.el5.x86_64.rpm
sssd-debuginfo-1.5.1-37.el5.i386.rpm
sssd-debuginfo-1.5.1-37.el5.x86_64.rpm
sssd-tools-1.5.1-37.el5.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
sssd-1.5.1-37.el5.i386.rpm
sssd-client-1.5.1-37.el5.i386.rpm
sssd-debuginfo-1.5.1-37.el5.i386.rpm
sssd-tools-1.5.1-37.el5.i386.rpm
ia64:
sssd-1.5.1-37.el5.ia64.rpm
sssd-client-1.5.1-37.el5.i386.rpm
sssd-client-1.5.1-37.el5.ia64.rpm
sssd-debuginfo-1.5.1-37.el5.i386.rpm
sssd-debuginfo-1.5.1-37.el5.ia64.rpm
sssd-tools-1.5.1-37.el5.ia64.rpm
ppc:
sssd-1.5.1-37.el5.ppc.rpm
sssd-client-1.5.1-37.el5.ppc.rpm
sssd-client-1.5.1-37.el5.ppc64.rpm
sssd-debuginfo-1.5.1-37.el5.ppc.rpm
sssd-debuginfo-1.5.1-37.el5.ppc64.rpm
sssd-tools-1.5.1-37.el5.ppc.rpm
s390x:
sssd-1.5.1-37.el5.s390x.rpm
sssd-client-1.5.1-37.el5.s390.rpm
sssd-client-1.5.1-37.el5.s390x.rpm
sssd-debuginfo-1.5.1-37.el5.s390.rpm
sssd-debuginfo-1.5.1-37.el5.s390x.rpm
sssd-tools-1.5.1-37.el5.s390x.rpm
x86_64:
sssd-1.5.1-37.el5.x86_64.rpm
sssd-client-1.5.1-37.el5.i386.rpm
sssd-client-1.5.1-37.el5.x86_64.rpm
sssd-debuginfo-1.5.1-37.el5.i386.rpm
sssd-debuginfo-1.5.1-37.el5.x86_64.rpm
sssd-tools-1.5.1-37.el5.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
Updated sssd packages that fix one security issue, several bugs, and addvarious enhancements are now available for Red Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having lowsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Bugs Fixed
640601 - sssd is not escaping correctly LDAP searches
661163 - CVE-2010-4341 sssd: DoS in sssd PAM responder can prevent logins
675007 - sssd corrupts group cache
676027 - sssd segfault when first entry of ldap_uri is unreachable
678032 - Remove HBAC time rules from SSSD
678092 - SSSD in 5.6 can not locate HBAC rules from FreeIPAv2
678412 - name service caches names, so id command shows recently deleted users678606 - User information not updated on login for secondary domains
678615 - SSSD needs to look at IPA's compat tree for netgroups
678778 - IPA provider does not update removed group memberships on initgroups
678780 - sssd crashes at the next tgt renewals it tries.
679087 - SSSD IPA provider should honor the krb5_realm option
679097 - Does not read renewable ccache at startup.
682803 - sssd-be segmentation fault - ipa-client on ipa-server
682808 - sssd_nss core dumps with certain lookups
682853 - IPA provider should use realm instead of ipa_domain for base DN
683260 - sudo/ldap lookup via sssd gets stuck for 5min waiting on netgroup
688677 - Build SSSD in RHEL 5.7 against openldap24-libs
688694 - authconfig fails when access_provider is set as krb5 in sssd.conf.
688697 - sssd 1.5.1-9 breaks AD authentication
689887 - group memberships are not populated correctly during IPA provider initgroups
690093 - multiple problems with sssd + ldap (Active-Directory) and groups members.
690096 - SSSD should skip over groups with multiple names
690287 - Traceback messages seen while interrupting sss_obfuscate using ctrl+d.
690814 - [abrt] sssd-1.2.1-28.el6_0.4: _talloc_free: Process /usr/libexec/sssd/sssd_be was killed by signal 11 (SIGSEGV)
690867 - Groups with a zero-length memberuid attribute can cause SSSD to stop caching and responding to requests
691900 - SSSD needs to fall back to 'cn' for GECOS information (was: SSSD configuration problem when configured with MSAD)
692960 - Process /usr/libexec/sssd/sssd_be was killed by signal 11 (SIGSEGV)
694149 - SSSD consumes GBs of RAM, possible memory leak
694853 - SSSD crashes during getent when anonymous bind is disabled.
695476 - Unable to resolve SRV record when called with _srv_,
696979 - [REGRESSION] Filters not honoured against fully-qualified users.
701702 - sssd client libraries use select() but should use poll() instead
707340 - latest sssd fails if ldap_default_authtok_type is not mentioned
707574 - SSSD's async resolver only tries the first nameserver in /etc/resolv.conf
