** Branch linked: lp:~ubuntu-branches/ubuntu/raring/freeipa/raring-
proposed

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https://bugs.launchpad.net/bugs/1104954

Title:
  CVE-2012-5484: ipa-client security vunerability

Status in “freeipa” package in Ubuntu:
  Confirmed
Status in “freeipa” source package in Precise:
  In Progress

Bug description:
  Needs to be fixed in Ubuntu.

  Sadly CVE Identifier is still not public.

  Anyways, fixes are already public:

  See RHEL Announcement.

  Security Advisory - RHSA-2013:0189-1
  ------------------------------------------------------------------------------
  Summary:
  Important: ipa-client security update

  An updated ipa-client package that fixes one security issue is now
  available for Red Hat Enterprise Linux 5.

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

  
  Description:
  Red Hat Identity Management is a centralized authentication, identity 
management and authorization solution for both traditional and cloud-based 
enterprise environments.

  A weakness was found in the way IPA clients communicated with IPA
  servers when initially attempting to join IPA domains. As there was no
  secure way to provide the IPA server's Certificate Authority (CA)
  certificate to the client during a join, the IPA client enrollment
  process was susceptible to man-in-the-middle attacks. This flaw could
  allow an attacker to obtain access to the IPA server using the
  credentials provided by an IPA client, including administrative access
  to the entire domain if the join was performed using an
  administrator's credentials. (CVE-2012-5484)

  Note: This weakness was only exposed during the initial client join to
  the realm, because the IPA client did not yet have the CA certificate
  of the server. Once an IPA client has joined the realm and has
  obtained the CA certificate of the IPA server, all further
  communication is secure. If a client were using the OTP (one-time
  password) method to join to the realm, an attacker could only obtain
  unprivileged access to the server (enough to only join the realm).

  Red Hat would like to thank Petr Menšík for reporting this issue.

  When a fix for this flaw has been applied to the client but not yet
  the server, ipa-client-install, in unattended mode, will fail if you
  do not have the correct CA certificate locally, noting that you must
  use the "--force" option to insecurely obtain the certificate. In
  interactive mode, the certificate will try to be obtained securely
  from LDAP. If this fails, you will be prompted to insecurely download
  the certificate via HTTP. In the same situation when using OTP, LDAP
  will not be queried and you will be prompted to insecurely download
  the certificate via HTTP.

  Users of ipa-client are advised to upgrade to this updated package,
  which corrects this issue.

  
  References:
  https://access.redhat.com/security/updates/classification/#important

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