ESB-2017.1144.3 - UPDATE [Ubuntu] shadow utilities: Multiple vulnerabilities 2017-11-16

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2017.1144.3
                          shadow vulnerabilities
                             16 November 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           shadow utilities
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Increased Privileges -- Existing Account
                   Denial of Service    -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-2616 CVE-2016-6252 

Reference:         ESB-2017.0955
                   ESB-2017.0751
                   ESB-2017.0523
                   ESB-2017.0512

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3276-1

Revision History:  November 16 2017: Update for Ubuntu 12.04 ESM.
                   May      17 2017: USN-3276-1 introduced a regression in su.
                   May       8 2017: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-3276-3: shadow vulnerability

Ubuntu Security Notice USN-3276-3

14th November, 2017

shadow vulnerability

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

    Ubuntu 12.04 LTS

Summary

su could be made to crash or stop programs as an administrator.

Software description

    shadow - system login tools

Details

USN-3276-1 and USN-3276-2 fixed vulnerabilities in shadow. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Sebastian Krahmer discovered integer overflows in shadow utilities.
A local attacker could possibly cause them to crash or potentially
gain privileges via crafted input. (CVE-2016-6252)

Update instructions

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

Ubuntu 12.04 LTS:
    passwd 1:4.1.4.2+svn3283-3ubuntu5.2 
    login 1:4.1.4.2+svn3283-3ubuntu5.2 

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-26166-1
CVE-2017-2616

==========================================================================
Ubuntu Security Notice USN-3276-2
May 17, 2017

shadow regression
==========================================================================

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

- - Ubuntu 17.04
- - Ubuntu 16.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

USN-3276-1 introduced a regression in su.

Software Description:
- - shadow: system login tools

Details:

USN-3276-1 intended to fix a vulnerability in su. The solution introduced
a regression in su signal handling. This update modifies the security fix.
We apologize for the inconvenience.

Original advisory details:

 Sebastian Krahmer discovered integer overflows in shadow utilities.
 A local attacker could possibly cause them to crash or potentially
 gain privileges via crafted input. (CVE-2016-6252)

 Tobias Stöckmann discovered a race condition in su. A local
 attacker could cause su to send SIGKILL to other processes with
 root privileges. (CVE-2017-2616)

Update instructions:

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

Ubuntu 17.04:
  login                           1:4.2-3.2ubuntu1.17.04.2
  passwd                          1:4.2-3.2ubuntu1.17.04.2
  uidmap                          1:4.2-3.2ubuntu1.17.04.2

Ubuntu 16.10:
  login                           1:4.2-3.2ubuntu1.16.10.2
  passwd                          1:4.2-3.2ubuntu1.16.10.2
  uidmap                          1:4.2-3.2ubuntu1.16.10.2

Ubuntu 16.04 LTS:
  login                           1:4.2-3.1ubuntu5.3
  passwd                          1:4.2-3.1ubuntu5.3
  uidmap                          1:4.2-3.1ubuntu5.3

Ubuntu 14.04 LTS:
  login                           1:4.1.5.1-1ubuntu9.5
  passwd                          1:4.1.5.1-1ubuntu9.5
  uidmap                          1:4.1.5.1-1ubuntu9.5

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

References:
  http://www.ubuntu.com/usn/usn-3276-2
  http://www.ubuntu.com/usn/usn-3276-1
  https://launchpad.net/bugs/1690820

Package Information:
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.2ubuntu1.17.04.2
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.2ubuntu1.16.10.2
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.1ubuntu5.3
  https://launchpad.net/ubuntu/+source/shadow/1:4.1.5.1-1ubuntu9.5

==============================================================================
Ubuntu Security Notice USN-3276-1
May 05, 2017

shadow vulnerabilities
==============================================================================

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

- - Ubuntu 17.04
- - Ubuntu 16.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

su could be made to crash or stop programs as an administrator.

Software Description:
- - shadow: system login tools

Details:

Sebastian Krahmer discovered integer overflows in shadow utilities.
A local attacker could possibly cause them to crash or potentially
gain privileges via crafted input. (CVE-2016-6252)

Tobias St=F6ckmann discovered a race condition in su. A local
attacker could cause su to send SIGKILL to other processes with
root privileges. (CVE-2017-2616)

Update instructions:

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

Ubuntu 17.04:
  login                           1:4.2-3.2ubuntu1.17.04.1
  passwd                          1:4.2-3.2ubuntu1.17.04.1
  uidmap                          1:4.2-3.2ubuntu1.17.04.1

Ubuntu 16.10:
  login                           1:4.2-3.2ubuntu1.16.10.1
  passwd                          1:4.2-3.2ubuntu1.16.10.1
  uidmap                          1:4.2-3.2ubuntu1.16.10.1

Ubuntu 16.04 LTS:
  login                           1:4.2-3.1ubuntu5.2
  passwd                          1:4.2-3.1ubuntu5.2
  uidmap                          1:4.2-3.1ubuntu5.2

Ubuntu 14.04 LTS:
  login                           1:4.1.5.1-1ubuntu9.4
  passwd                          1:4.1.5.1-1ubuntu9.4
  uidmap                          1:4.1.5.1-1ubuntu9.4

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

References:
  http://www.ubuntu.com/usn/usn-3276-1
  CVE-2016-6252, CVE-2017-2616

Package Information:
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.2ubuntu1.17.04.1
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.2ubuntu1.16.10.1
  https://launchpad.net/ubuntu/+source/shadow/1:4.2-3.1ubuntu5.2
  https://launchpad.net/ubuntu/+source/shadow/1:4.1.5.1-1ubuntu9.4

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