A race condition was found in the way SSSD copied and removed user home directories. A local attacker who is able to write into the home directory of a different user who is being removed could use this flaw to perform symbolic link attacks, possibly allowing them to modify and delete arbitrary files with the privileges of the root user.
(CVE-2013-0219)

Multiple out-of-bounds memory read flaws were found in the way the autofs and SSH service responders parsed certain SSSD packets. An attacker could spend a specially crafted packet that, when processed by the autofs or SSH service responders, would cause SSSD to crash.
This issue only caused a temporary denial of service, as SSSD was automatically restarted by the monitor process after the crash.
(CVE-2013-0220)

A rebase to the latest LTM upstream relase that fixes CVE-2013-0220 and CVE-2013-0219

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated sssd packages that fix two security issues, multiple bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having low 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.

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 race condition was found in the way SSSD copied and removed user home directories. A local attacker who is able to write into the home directory of a different user who is being removed could use this flaw to perform symbolic link attacks, possibly allowing them to modify and delete arbitrary files with the privileges of the root user.
(CVE-2013-0219)

Multiple out-of-bounds memory read flaws were found in the way the autofs and SSH service responders parsed certain SSSD packets. An attacker could spend a specially crafted packet that, when processed by the autofs or SSH service responders, would cause SSSD to crash.
This issue only caused a temporary denial of service, as SSSD was automatically restarted by the monitor process after the crash.
(CVE-2013-0220)

The CVE-2013-0219 and CVE-2013-0220 issues were discovered by Florian Weimer of the Red Hat Product Security Team.

These updated sssd packages also include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes.

All SSSD users are advised to upgrade to these updated packages, which upgrade SSSD to upstream version 1.9 to correct these issues, fix these bugs and add these enhancements.

A rebase to the latest LTM upstream relase that fixes CVE-2013-0220 and CVE-2013-0219.

Also fixes recreating the Kerberos cache when any part of the ccache directory is gone.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-0508 advisory.

    [1.9.2-82]
    - Resolves: rhbz#888614 - Failure in memberof can lead to failed                               database update

    [1.9.2-81]
    - Resolves: rhbz#903078 - TOCTOU race conditions by copying                               and removing directory trees

    [1.9.2-80]
    - Resolves: rhbz#903078 - Out-of-bounds read flaws in                               autofs and ssh services responders

    [1.9.2-79]
    - Resolves: rhbz#902716 - Rule mismatch isn't noticed before smart refresh                               on ppc64 and s390x

    [1.9.2-78]
    - Resolves: rhbz#896476 - SSSD should warn when pam_pwd_expiration_warning                               value is higher than passwordWarning LDAP attribute.

    [1.9.2-77]
    - Resolves: rhbz#902436 - possible segfault when backend callback is removed

    [1.9.2-76]
    - Resolves: rhbz#895132 - Modifications using sss_usermod tool are not                               reflected in memory cache

    [1.9.2-75]
    - Resolves: rhbz#894302 - sssd fails to update to changes on autofs maps

    [1.9.2-74]
    - Resolves: rhbz894381 - memory cache is not updated after user is deleted                              from ldb cache

    [1.9.2-73]
    - Resolves: rhbz895615 - ipa-client-automount: autofs failed in s390x and                              ppc64 platform

    [1.9.2-72]
    - Resolves: rhbz#894997 - sssd_be crashes looking up members with groups                               outside the nesting limit

    [1.9.2-71]
    - Resolves: rhbz#895132 - Modifications using sss_usermod tool are not                               reflected in memory cache

    [1.9.2-70]
    - Resolves: rhbz#894428 - wrong filter for autofs maps in sss_cache

    [1.9.2-69]
    - Resolves: rhbz#894738 - Failover to ldap_chpass_backup_uri doesn't work

    [1.9.2-68]
    - Resolves: rhbz#887961 - AD provider: getgrgid removes nested group                               memberships

    [1.9.2-67]
    - Resolves: rhbz#878583 - IPA Trust does not show secondary groups for AD                               Users for commands like id and getent

    [1.9.2-66]
    - Resolves: rhbz#874579 - sssd caching not working as expected for selinux                               usermap contexts

    [1.9.2-65]
    - Resolves: rhbz#892197 - Incorrect principal searched for in keytab

    [1.9.2-64]
    - Resolves: rhbz#891356 - Smart refresh doesn't notice 'defaults' addition                               with OpenLDAP

    [1.9.2-63]
    - Resolves: rhbz#878419 - sss_userdel doesn't remove entries from in-memory                               cache

    [1.9.2-62]
    - Resolves: rhbz#886848 - user id lookup fails for case sensitive users                               using proxy provider

    [1.9.2-61]
    - Resolves: rhbz#890520 - Failover to krb5_backup_kpasswd doesn't work

    [1.9.2-60]
    - Resolves: rhbz#874618 - sss_cache: fqdn not accepted

    [1.9.2-59]
    - Resolves: rhbz#889182 - crash in memory cache

    [1.9.2-58]
    - Resolves: rhbz#889168 - krb5 ticket renewal does not read the renewable                               tickets from cache

    [1.9.2-57]
    - Resolves: rhbz#886091 - Disallow root SSH public key authentication
    - Add default section to switch statement (Related: rhbz#884666)

    [1.9.2-56]
    - Resolves: rhbz#886038 - sssd components seem to mishandle sighup

    [1.9.2-55]
    - Resolves: rhbz#888800 - Memory leak in new memcache initgr cleanup function

    [1.9.2-54]
    - Resolves: rhbz#888614 - Failure in memberof can lead to failed database                               update

    [1.9.2-53]
    - Resolves: rhbz#885078 - sssd_nss crashes during enumeration if the                               enumeration is taking too long

    [1.9.2-52]
    - Related: rhbz#875851 - sysdb upgrade failed converting db to 0.11
    - Include more debugging during the sysdb upgrade

    [1.9.2-51]
    - Resolves: rhbz#877972 - ldap_sasl_authid no longer accepts full principal

    [1.9.2-50]
    - Resolves: rhbz#870045 - always reread the master map from LDAP
    - Resolves: rhbz#876531 - sss_cache does not work for automount maps

    [1.9.2-49]
    - Resolves: rhbz#884666 - sudo: if first full refresh fails, schedule                               another first full refresh

    [1.9.2-48]
    - Resolves: rhbz#880956 - Primary server status is not always reset after                               failover to backup server happened
    - Silence a compilation warning in the memberof plugin (Related: rhbz#877974)
    - Do not steal resolv result on error (Related: rhbz#882076)

    [1.9.2-47]
    - Resolves: rhbz#882923 - Negative cache timeout is not working for proxy                               provider

    [1.9.2-46]
    - Resolves: rhbz#884600 - ldap_chpass_uri failover fails on using same                               hostname

    [1.9.2-45]
    - Resolves: rhbz#858345 - pam_sss(crond:account): Request to sssd                               failed. Timer expired

    [1.9.2-44]
    - Resolves: rhbz#878419 - sss_userdel doesn't remove entries from in-memory                               cache

    [1.9.2-43]
    - Resolves: rhbz#880176 - memberUid required for primary groups to match                               sudo rule

    [1.9.2-42]
    - Resolves: rhbz#885105 - sudo denies access with disabled                               ldap_sudo_use_host_filter

    [1.9.2-41]
    - Resolves: rhbz#883408 - Option ldap_sudo_include_regexp named incorrectly

    [1.9.2-40]
    - Resolves: rhbz#880546 - krb5_kpasswd failover doesn't work
    - Fix the error handler in sss_mc_create_file (Related: #789507)

    [1.9.2-39]
    - Resolves: rhbz#882221 - Offline sudo denies access with expired                               entry_cache_timeout
    - Fix several bugs found by Coverity and clang:
    - Check the return value of diff_gid_lists (Related: #869071)
    - Move misplaced sysdb assignment (Related: #827606)
    - Remove dead assignment (Related: #827606)
    - Fix copy-n-paste error in the memberof plugin (Related: #877974)

    [1.9.2-38]
    - Resolves: rhbz#882923 - Negative cache timeout is not working for proxy                               provider
    - Link sss_ssh_authorizedkeys and sss_ssh_knowhostsproxy with the client       libraries (Related: #870060)
    - Move sss_ssh_knownhosts documentation to the correct section       (Related: #870060)

    [1.9.2-37]
    - Resolves: rhbz#884480 - user is not removed from group membership during                               initgroups
    - Fix incorrect synchronization in mmap cache (Related: #789507)

    [1.9.2-36]
    - Resolves: rhbz#883336 - sssd crashes during start if id_provider is                               not mentioned

    [1.9.2-35]
    - Resolves: rhbz#882290 - arithmetic bug in the SSSD causes netgroup                               midpoint refresh to be always set to 10 seconds

    [1.9.2-34]
    - Resolves: rhbz#877974 - updating top-level group does not reflect ghost                               members correctly
    - Resolves: rhbz#880159 - delete operation is not implemented for ghost users

    [1.9.2-33]
    - Resolves: rhbz#881773 - mmap cache needs update after db changes

    [1.9.2-32]
    - Resolves: rhbz#875677 - password expiry warning message doesn't appear                               during auth
    - Fix potential NULL dereference when skipping built-in AD groups       (Related: rhbz#874616)
    - Add missing parameter to DEBUG message (Related: rhbz#829742)

    [1.9.2-31]
    - Resolves: rhbz#882076 - SSSD crashes when c-ares returns success but an                               empty hostent during the DNS update
    - Do not version libsss_sudo, it's not supposed to be linked against, but       dlopened (Related: rhbz#761573)

    [1.9.2-30]
    - Resolves: rhbz#880140 - sssd hangs at startup with broken configurations

    [1.9.2-29]
    - Resolves: rhbz#878420 - SIGSEGV in IPA provider when ldap_sasl_authid is not set

    [1.9.2-28]
    - Resolves: rhbz#874616 - Silence the DEBUG messages when ID mapping code                               skips a built-in group

    [1.9.2-27]
    - Resolves: rhbz#824244 - sssd does not warn into sssd.log for broken                               configurations

    [1.9.2-26]
    - Resolves: rhbz#874673 - user id lookup fails using proxy provider
    - Fix a possibly uninitialized variable in the LDAP provider
    - Related: rhbz#877130

    [1.9.2-25]
    - Resolves: rhbz#878262 - ipa password auth failing for user principal                               name when shorter than IPA Realm name
    - Resolves: rhbz#871843 - Nested groups are not retrieved appropriately                               from cache

    [1.9.2-24]
    - Resolves: rhbz#870238 - IPA client cannot change AD Trusted User password

    [1.9.2-23]
    - Resolves: rhbz#877972 - ldap_sasl_authid no longer accepts full principal

    [1.9.2-22]
    - Resolves: rhbz#861075 - SSSD_NSS failure to gracefully restart                               after sbus failure

    [1.9.2-21]
    - Resolves: rhbz#877354 - ldap_connection_expire_timeout doesn't expire                               ldap connections

    [1.9.2-20]
    - Related: rhbz#877126 - Bump the release tag

    [1.9.2-20]
    - Resolves: rhbz#877126 - subdomains code does not save the proper                               user/group name

    [1.9.2-19]
    - Resolves: rhbz#877130 - LDAP provider fails to save empty groups
    - Related: rhbz#869466 - check the return value of waitpid()

    [1.9.2-18]
    - Resolves: rhbz#870039 - sss_cache says 'Wrong DB version'

    [1.9.2-17]
    - Resolves: rhbz#875740 - 'defaults' entry ignored

    [1.9.2-16]
    - Resolves: rhbz#875738 - offline authentication failure always returns                               System Error

    [1.9.2-15]
    - Resolves: rhbz#875851 - sysdb upgrade failed converting db to 0.11

    [1.9.2-14]
    - Resolves: rhbz#870278 -  ipa client setup should configure host properly                                in a trust is in place

    [1.9.2-13]
    - Resolves: rhbz#871160 - sudo failing for ad trusted user in IPA environment

    [1.9.2-12]
    - Resolves: rhbz#870278 -  ipa client setup should configure host properly                                in a trust is in place

    [1.9.2-11]
    - Resolves: rhbz#869678 - sssd not granting access for AD trusted user in HBAC rule

    [1.9.2-10]
    - Resolves: rhbz#872180 - subdomains: Invalid sub-domain request type
    - Related: rhbz#867933 - invalidating the memcache with sss_cache doesn't work                              if the sssd is not running

    [1.9.2-9]
    - Resolves: rhbz#873988 - Man page issue to list 'force_timeout' as an                               option for the [sssd] section

    [1.9.2-8]
    - Resolves: rhbz#873032 - Move sss_cache to the main subpackage

    [1.9.2-7]
    - Resolves: rhbz#873032 - Move sss_cache to the main subpackage
    - Resolves: rhbz#829740 - Init script reports complete before sssd is actually                               working
    - Resolves: rhbz#869466 - SSSD starts multiple processes due to syntax error in                               ldap_uri
    - Resolves: rhbz#870505 - sss_cache: Multiple domains not handled properly
    - Resolves: rhbz#867933 - invalidating the memcache with sss_cache doesn't work                               if the sssd is not running
    - Resolves: rhbz#872110 - User appears twice on looking up a nested group

    [1.9.2-6]
    - Resolves: rhbz#871576 - sssd does not resolve group names from AD
    - Resolves: rhbz#872324 - pam: fd leak when writing the selinux login file                               in the pam responder
    - Resolves: rhbz#871424 - authconfig chokes on sssd.conf with chpass_provider                               directive

    [1.9.2-5]
    - Do not send SIGKILL to service right after sending SIGTERM
    - Resolves: #771975
    - Fix the initial sudo smart refresh
    - Resolves: #869013
    - Implement password authentication for users from trusted domains
    - Resolves: #869071
    - LDAP child crashed with a wrong keytab
    - Resolves: #869150
    - The sssd_nss process grows the memory consumption over time
    - Resolves: #869443

    [1.9.2-4]
    - BuildRequire selinux-policy so that selinux login support is built in
    - Resolves: #867932

    [1.9.2-3]
    - Do not segfault if namingContexts contain no values or multiple values
    - Resolves: rhbz#866542

    [1.9.2-2]
    - Fix the 'ca' translation of the sssd-simple manual page
    - Related: rhbz#827606 - Rebase SSSD to 1.9 in 6.4

    [1.9.2-1]
    - New upstream release 1.9.2

    [1.9.1-1]
    - Rebase to 1.9.1

    [1.9.0-3]
    - Require the latest libldb

    [1.9.0-2]
    - Rebase to 1.9.0
    - Resolves: rhbz#827606 - Rebase SSSD to 1.9 in 6.4

    [1.9.0-1.rc1]
    - Rebase to 1.9.0 RC1
    - Resolves: rhbz#827606 - Rebase SSSD to 1.9 in 6.4
    - Bump the selinux-policy version number to pull in required fixes

    [1.8.0-33]
    - Resolves: rhbz#840089 - Update the shadowLastChange attribute                               with days since the Epoch, not seconds

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
65016	Scientific Linux Security Update : sssd on SL6.x i386/x86_64 (20130221)	Nessus	Scientific Linux Local Security Checks	3/5/2013	1/14/2021	medium
64602	Fedora 17 : sssd-1.8.6-1.fc17 (2013-1826)	Nessus	Fedora Local Security Checks	2/13/2013	1/11/2021	medium
65142	CentOS 6 : sssd (CESA-2013:0508)	Nessus	CentOS Local Security Checks	3/10/2013	1/4/2021	medium
64545	Fedora 18 : sssd-1.9.4-2.fc18 (2013-1795)	Nessus	Fedora Local Security Checks	2/11/2013	1/11/2021	medium
64758	RHEL 6 : sssd (RHSA-2013:0508)	Nessus	Red Hat Local Security Checks	2/21/2013	1/14/2021	medium
68747	Oracle Linux 6 : sssd (ELSA-2013-0508)	Nessus	Oracle Linux Local Security Checks	7/12/2013	10/22/2024	high

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