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==========================================================================
Ubuntu Security Notice USN-1442-1
May 16, 2012

sudo vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

Sudo could allow users to run arbitrary programs as the administrator.

Software Description:
- sudo: Provide limited super user privileges to specific users

Details:

It was discovered that sudo incorrectly handled network masks when using Host
and Host_List. A local user who is listed in sudoers may be allowed to run
commands on unintended hosts when IPv4 network masks are used to grant access.
A local attacker could exploit this to bypass intended access restrictions.
 Host
and Host_List are not used in the default installation of Ubuntu.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
  sudo                            1.8.3p1-1ubuntu3.2
  sudo-ldap                       1.8.3p1-1ubuntu3.2

Ubuntu 11.10:
  sudo                            1.7.4p6-1ubuntu2.1
  sudo-ldap                       1.7.4p6-1ubuntu2.1

Ubuntu 11.04:
  sudo                            1.7.4p4-5ubuntu7.2
  sudo-ldap                       1.7.4p4-5ubuntu7.2

Ubuntu 10.04 LTS:
  sudo                            1.7.2p1-1ubuntu5.4
  sudo-ldap                       1.7.2p1-1ubuntu5.4

Ubuntu 8.04 LTS:
  sudo                            1.6.9p10-1ubuntu3.9
  sudo-ldap                       1.6.9p10-1ubuntu3.9

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1442-1
  CVE-2012-2337

Package Information:
  https://launchpad.net/ubuntu/+source/sudo/1.8.3p1-1ubuntu3.2
  https://launchpad.net/ubuntu/+source/sudo/1.7.4p6-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/sudo/1.7.4p4-5ubuntu7.2
  https://launchpad.net/ubuntu/+source/sudo/1.7.2p1-1ubuntu5.4
  https://launchpad.net/ubuntu/+source/sudo/1.6.9p10-1ubuntu3.9


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