[Bug 903752] Re: [MIR] sssd

Timo Aaltonen tjaalton at ubuntu.com
Tue Jul 9 19:18:05 UTC 2013

** Description changed:

+ sssd & ding-libs (which got split off sssd at some point):
  1. Availability:
   - in universe for some time
  2. Rationale:
   - https://blueprints.launchpad.net/ubuntu/+spec/servercloud-p-sssd-mir
  3.  Security:
   - no current CVE
   - five CVE reports in the past:
   CVE-2011-1758 	The krb5_save_ccname_done function in providers/krb5/krb5_auth.c in System Security Services Daemon (SSSD) 1.5.x before 1.5.7, when automatic ticket renewal and offline authentication are configured, uses a pathname string as a password, which allows local users to bypass Kerberos authentication by listing the /tmp directory to obtain the pathname.
   CVE-2010-4341 	The pam_parse_in_data_v2 function in src/responder/pam/pamsrv_cmd.c in the PAM responder in SSSD 1.5.0, 1.4.x, and 1.3 allows local users to cause a denial of service (infinite loop, crash, and login prevention) via a crafted packet.
   CVE-2010-2940 	The auth_send function in providers/ldap/ldap_auth.c in System Security Services Daemon (SSSD) 1.3.0, when LDAP authentication and anonymous bind are enabled, allows remote attackers to bypass the authentication requirements of pam_authenticate via an empty password.
   CVE-2010-0014 	System Security Services Daemon (SSSD) before 1.0.1, when the krb5 auth_provider is configured but the KDC is unreachable, allows physically proximate attackers to authenticate, via an arbitrary password, to the screen-locking program on a workstation that has any user's Kerberos ticket-granting ticket (TGT); and might allow remote attackers to bypass intended access restrictions via vectors involving an arbitrary password in conjunction with a valid TGT.
   CVE-2009-2410   The local_handler_callback function in server/responder/pam/pam_LOCAL_domain.c in sssd 0.4.1 does not properly handle blank-password accounts in the SSSD BE database, which allows context-dependent attackers to obtain access by sending the account's username, in conjunction with an arbitrary password, over an ssh connection.
   all got fixed by upstream in a timely manner.
   - ships a daemon that handles connections to LDAP, Kerberos servers
   - doesn't open privileged ports
   - binaries in /usr/sbin include sssd, sss_group{add,del,mod}, sss_user{add,del,mod}
  4. Quality assurance:
   - current version doesn't install any working configuration, it is the plan to add support for debconf though
  5. UI standards:
   - not applicable
  6. Dependencies:
   - ding-libs (libcollection-dev, libini-config-dev, libdhash-dev)
   - tevent (libtevent-dev)
   - ldb (libldb-dev)
   - libsemanage (libsemanage1-dev)
+  - samba4 (libndr-dev, libndr-standard-dev, libsamba-util-dev, libdcerpc-dev, samba4-dev)
+  - libpwquality (libpam-sss now depends on libpam-pwquality)
  7. Standards compliance:
   - shipped by debian
   - lintian clean
   - uses dh, source format 3.0 (quilt)
  8. Maintenance:
   - currently maintained by a team of volunteers on Debian and Ubuntu
   - shared git repository on git.debian.org
  9. Background information:

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  [MIR] sssd

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