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Security Advisory Low: sssd security, bug fix, and enhancement update

Advisory: RHSA-2011:0975-1
Type: Security Advisory
Severity: Low
Issued on: 2011-07-21
Last updated on: 2011-07-21
Affected Products: Red Hat Enterprise Linux (v. 5 server)
Red Hat Enterprise Linux Desktop (v. 5 client)
CVEs (cve.mitre.org): CVE-2010-4341

Details

Updated sssd packages that fix one security issue, several bugs, and add
various enhancements are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team 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) 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://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.7_Technical_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.


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

Updated packages

Red Hat Enterprise Linux (v. 5 server)

SRPMS:
sssd-1.5.1-37.el5.src.rpm
File outdated by:  RHSA-2013:1319
    MD5: d502e0eccdbf271e390ab2e71579cd0d
SHA-256: ebdf36a04aafabca61cc8f5e2466e3034f0966ca86cc11695b8267929f2bfda6
 
IA-32:
sssd-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4d316fe0324d08ab0c690e72989994f9
SHA-256: 80da177faf4565d7853b767969b91f81fc565f7e9e0af768ec8bfd6efcba5295
sssd-client-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4fbf0e4c943898fe47ab05dbcfaecd6a
SHA-256: a9a416189b1e8d5df4116a184cb411c6b69792101524916b22a3cfc0400c4039
sssd-tools-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: d35633026060f517259d7df854cd19d1
SHA-256: 569001134c1f71ed133fea516d2b4c67f51936ca12773e9f530c6ed049cd784e
 
IA-64:
sssd-1.5.1-37.el5.ia64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 5c29d837d371bc45f85190cd2b14639e
SHA-256: eec24de2460ae363423782c41f8674b484a69e2a57bb6af4e54ffde0a72c0486
sssd-client-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4fbf0e4c943898fe47ab05dbcfaecd6a
SHA-256: a9a416189b1e8d5df4116a184cb411c6b69792101524916b22a3cfc0400c4039
sssd-client-1.5.1-37.el5.ia64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 6d5fa6cd6b8a064c19c95ea76c2f89fa
SHA-256: d4c27ef1252a09e5f0019a6cdc13459c41a78dc6e1c73e988403ab8c4032efbe
sssd-tools-1.5.1-37.el5.ia64.rpm
File outdated by:  RHSA-2013:1319
    MD5: f322ddd516415e3d8d56aa76f3fdb737
SHA-256: b0b1128ca722ec2441b7ebd891d8434efb0927e5ab89845a726d2a8bdfe48e99
 
PPC:
sssd-1.5.1-37.el5.ppc.rpm
File outdated by:  RHSA-2013:1319
    MD5: f0a325072e08098cd99d4de5e4bd050c
SHA-256: c38bb1b55ebd1f4abfb6b37c0c17719c3b723e5fdf91047335cb5e80dd8d7d8f
sssd-client-1.5.1-37.el5.ppc.rpm
File outdated by:  RHSA-2013:1319
    MD5: 96a8b673e8787d585ac571e8fbf8f383
SHA-256: 29fd205a834d7d1de6ac2f660bc860369f28a815132f7d4cb7748c5a395b9532
sssd-client-1.5.1-37.el5.ppc64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 77d02d533bf269f8ec1b7ff031d671d0
SHA-256: bdf3f9a9bc68cab8b1ad4e1b877ec1b0eaa9a892e71cc5553128ee01b94593d6
sssd-tools-1.5.1-37.el5.ppc.rpm
File outdated by:  RHSA-2013:1319
    MD5: b8cfc0938dfb80aed2d2daf46a6e7b7f
SHA-256: 195093fd11626ef01b0d75b28d0d7e46853076b3feb5522621362b20fe2afccb
 
s390x:
sssd-1.5.1-37.el5.s390x.rpm
File outdated by:  RHSA-2013:1319
    MD5: 004dc2aed0f1b41bd8002fb75b697496
SHA-256: 0b89a2e300e5aa7c43e512bc62ad9173e49b07a4515a1b9d4e552c8c824cf95a
sssd-client-1.5.1-37.el5.s390.rpm
File outdated by:  RHSA-2013:1319
    MD5: 487b72e934dbed5b7e068aa092afa5d3
SHA-256: 02fa3622ac7c0f8867dd6fb2ab72e5107f8344335ab94d21cfd0af863b9674bd
sssd-client-1.5.1-37.el5.s390x.rpm
File outdated by:  RHSA-2013:1319
    MD5: 18b7455d13313f61078b041bbbae36d1
SHA-256: 4bee3e41b428ddc5fd9f2e60044c75c1cdbf64e575d34cdff5332b02b0b47ecd
sssd-tools-1.5.1-37.el5.s390x.rpm
File outdated by:  RHSA-2013:1319
    MD5: daa7c8b70eb4a7c9cd0cb87200daf94f
SHA-256: eb9fc4cac2b190ee916d01d5356279672020a856cab06750013f1be4879d1911
 
x86_64:
sssd-1.5.1-37.el5.x86_64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 9188f8b9f20269040fe1b4d16a7da929
SHA-256: 04715084960ea4979bad2c7ac4581456e868567d45c0dada3fd3cdd829dd6a77
sssd-client-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4fbf0e4c943898fe47ab05dbcfaecd6a
SHA-256: a9a416189b1e8d5df4116a184cb411c6b69792101524916b22a3cfc0400c4039
sssd-client-1.5.1-37.el5.x86_64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 562494a54294b920537a753c42b8ad78
SHA-256: 34d8fcecb507676abaaad72f8644fd85abc9444c5f8f052cdda0fa50fd3a9e75
sssd-tools-1.5.1-37.el5.x86_64.rpm
File outdated by:  RHSA-2013:1319
    MD5: ef951baa2de463341cbe43aeec005932
SHA-256: a72bf5880466d93c1647a187c7e311c90b74f951ed645c3cd604b8fa2173f142
 
Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
sssd-1.5.1-37.el5.src.rpm
File outdated by:  RHSA-2013:1319
    MD5: d502e0eccdbf271e390ab2e71579cd0d
SHA-256: ebdf36a04aafabca61cc8f5e2466e3034f0966ca86cc11695b8267929f2bfda6
 
IA-32:
sssd-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4d316fe0324d08ab0c690e72989994f9
SHA-256: 80da177faf4565d7853b767969b91f81fc565f7e9e0af768ec8bfd6efcba5295
sssd-client-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4fbf0e4c943898fe47ab05dbcfaecd6a
SHA-256: a9a416189b1e8d5df4116a184cb411c6b69792101524916b22a3cfc0400c4039
sssd-tools-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: d35633026060f517259d7df854cd19d1
SHA-256: 569001134c1f71ed133fea516d2b4c67f51936ca12773e9f530c6ed049cd784e
 
x86_64:
sssd-1.5.1-37.el5.x86_64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 9188f8b9f20269040fe1b4d16a7da929
SHA-256: 04715084960ea4979bad2c7ac4581456e868567d45c0dada3fd3cdd829dd6a77
sssd-client-1.5.1-37.el5.i386.rpm
File outdated by:  RHSA-2013:1319
    MD5: 4fbf0e4c943898fe47ab05dbcfaecd6a
SHA-256: a9a416189b1e8d5df4116a184cb411c6b69792101524916b22a3cfc0400c4039
sssd-client-1.5.1-37.el5.x86_64.rpm
File outdated by:  RHSA-2013:1319
    MD5: 562494a54294b920537a753c42b8ad78
SHA-256: 34d8fcecb507676abaaad72f8644fd85abc9444c5f8f052cdda0fa50fd3a9e75
sssd-tools-1.5.1-37.el5.x86_64.rpm
File outdated by:  RHSA-2013:1319
    MD5: ef951baa2de463341cbe43aeec005932
SHA-256: a72bf5880466d93c1647a187c7e311c90b74f951ed645c3cd604b8fa2173f142
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

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 users
678606 - 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_,<fixed ldap uri> in ldap_uri
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


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/