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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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