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USN-4229-2: NTP vulnerability

15 March 2021

NTP could be made to crash or run programs if it received specially crafted network traffic.

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Releases

Packages

  • ntp - Network Time Protocol daemon and utility programs

Details

USN-4229-1 fixed a vulnerability in NTP. This update provides the
corresponding update for Ubuntu 18.04 ESM.

Original advisory 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 18.04

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

References

Related notices

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Further reading