ESB-2018.0120 - [Ubuntu] sssd: Execute arbitrary code/commands - Existing account 2018-01-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0120
                            SSSD vulnerability
                              11 January 2018

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

Product:           sssd
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Access Confidential Data        -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12173  

Reference:         ESB-2017.3105

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3526-1

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USN-3526-1: SSSD vulnerability

Ubuntu Security Notice USN-3526-1

10th January, 2018

sssd vulnerability

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

    Ubuntu 17.04
    Ubuntu 16.04 LTS

Summary

SSSD could be made to expose sensitive information.

Software description

    sssd - System Security Services Daemon -- metapackage

Details

It was discovered that SSSD incorrectly handled certain inputs when querying
its local cache. An attacker could use this to inject arbitrary code and expose
sensitive information.

Update instructions

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

Ubuntu 17.04:
    sssd 1.15.2-1ubuntu1.1 
    sssd-common 1.15.2-1ubuntu1.1 
    sssd-tools 1.15.2-1ubuntu1.1 
Ubuntu 16.04 LTS:
    sssd 1.13.4-1ubuntu1.10 
    sssd-common 1.13.4-1ubuntu1.10 
    sssd-tools 1.13.4-1ubuntu1.10 

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-2017-12173

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