Ubuntu: 12.04-15.10 LTS USN-2783-1 Moderate: NTP Denial Of Service

ubuntu

October 27, 2015

Several security issues were fixed in NTP.

Summary

Several security issues were fixed in NTP.

Software Description:

- ntp: Network Time Protocol daemon and utility programs

Details:

Aleksis Kauppinen discovered that NTP incorrectly handled certain remote

config packets. In a non-default configuration, a remote authenticated

attacker could possibly use this issue to cause NTP to crash, resulting in

a denial of service. (CVE-2015-5146)

Miroslav Lichvar discovered that NTP incorrectly handled logconfig

directives. In a non-default configuration, a remote authenticated attacker

could possibly use this issue to cause NTP to crash, resulting in a denial

of service. (CVE-2015-5194)

Miroslav Lichvar discovered that NTP incorrectly handled certain statistics

types. In a non-default configuration, a remote authenticated attacker

could possibly use this issue to cause NTP to crash, resulting in a denial

of service. (CVE-2015-5195)

Miroslav Lichvar discovered that NTP incorrectly handled certain file

paths. In a n...

Read the Full Advisory

Topics Covered

security advisory denial of service security issue Ubuntu network protocol service attack NTP

Update Instructions

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

Ubuntu 15.10:
  ntp                             1:4.2.6.p5+dfsg-3ubuntu8.1

Ubuntu 15.04:
  ntp                             1:4.2.6.p5+dfsg-3ubuntu6.2

Ubuntu 14.04 LTS:
  ntp                             1:4.2.6.p5+dfsg-3ubuntu2.14.04.5

Ubuntu 12.04 LTS:
  ntp                             1:4.2.6.p3+dfsg-1ubuntu3.6

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