ESB-2020.2962 – [Linux][Ubuntu][Mac] Chrony: Denial of service – Existing account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.2962
                     USN-4475-1: Chrony vulnerability
                              28 August 2020

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

Product:           Chrony
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
                   Mac OS
Impact/Access:     Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-14367  

Original Bulletin: 
   https://usn.ubuntu.com/4475-1/

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running Chrony check for an updated version of the software for 
         their operating system.

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USN-4475-1: Chrony vulnerability
27 August 2020

Chrony could be made to crash or expose sensitive information.
Releases

  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS

Packages

  o chrony - An implementation of the Network Time Protocol

Details

It was discovered that Chrony incorrectly handled certain symbolic links.
An attacker could possibly use this issue to cause a denial of service or
expose sensitive information.

Update instructions

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

Ubuntu 20.04

  o chrony - 3.5-6ubuntu6.2

Ubuntu 18.04

  o chrony - 3.2-4ubuntu4.5

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

References

  o CVE-2020-14367

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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The post ESB-2020.2962 - [Linux][Ubuntu][Mac] Chrony: Denial of service - Existing account first appeared on Malware Devil.

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