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Family: Ubuntu Local Security Checks --> Category: infos

USN175-1 : ntp vulnerability Vulnerability Scan

Vulnerability Scan Summary
ntp vulnerability

Detailed Explanation for this Vulnerability Test

Synopsis :

These remote packages are missing security patches :
- ntp
- ntp-doc
- ntp-refclock
- ntp-server
- ntp-simple
- ntpdate

Description :

Thomas Biege discovered a flaw in the privilege dropping of the NTP
server. When ntpd was configured to drop root rights, and the
group to run under was specified as a name (as opposed to a numeric
group ID), ntpd changed to the wrong group. Depending on the actual
group it changed to, this could either cause non-minimal rights,
or a malfunctioning ntp server if the group does not have the
rights that ntpd actually needs.

On Ubuntu 4.10, ntpd does not use privilege dropping by default, so
you are only affected if you manually activated it. In Ubuntu 5.04,
privilege dropping is used by default, but this bug is already fixed.

Solution :

Upgrade to :
- ntp-4.2.0a-10ubuntu2.1 (Ubuntu 4.10)
- ntp-doc-4.2.0a-10ubuntu2.1 (Ubuntu 4.10)
- ntp-refclock-4.2.0a-10ubuntu2.1 (Ubuntu 4.10)
- ntp-server-4.2.0a-10ubuntu2.1 (Ubuntu 4.10)
- ntp-simple-4.2.0a-10ubuntu2.1 (Ubuntu 4.10)
- ntpdate-4.2.0a-10ubuntu2.1 (Ubuntu 4.10)

Threat Level: High

Click HERE for more information and discussions on this network vulnerability scan.


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