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AUSCERT External Security Bulletin Redistribution
ESB-2020.0105
USN-4229-1: NTP vulnerability
10 January 2020
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AusCERT Security Bulletin Summary
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Product: ntpq
ntpdc
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Increased Privileges -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-12327
Reference: ESB-2018.3935
ESB-2018.3239
Original Bulletin:
https://usn.ubuntu.com/4229-1/
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TUSN-4229-1: NTP vulnerability
9 January 2020
ntp vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
A security issue was fixed in ntpq and ntpdc.
Software Description
o ntp - Network Time Protocol daemon and utility programs
Details
It was discovered that ntpq and ntpdc incorrectly handled some arguments. An
attacker could possibly use this issue to cause ntpq or ntpdc to crash, execute
arbitrary code, or escalate to higher privileges.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 16.04 LTS
ntp - 1:4.2.8p4+dfsg-3ubuntu5.10
Ubuntu 14.04 ESM
ntp - 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13+esm1
Ubuntu 12.04 ESM
ntp - 1:4.2.6.p3+dfsg-1ubuntu3.13
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
o CVE-2018-12327
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