Ubuntu alert USN-4563-1 (ntp)

From:
             
 
Emilia Torino <emilia.torino@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-4563-1] NTP vulnerability
Date:
             
 
Thu, 01 Oct 2020 18:58:23 -0300
Message-ID:
             
 
<e3090611-a02a-eb7a-bb5e-9e15767539dc@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4563-1
October 01, 2020

ntp vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

NTP could be made to crash.

Software Description:
- ntp: Network Time Protocol daemon and utility programs

Details:

It was discovered that the fix for CVE-2018-7182 introduced a NULL
pointer dereference into NTP. An attacker could use this vulnerability
to cause a denial of service (crash).

Update instructions:

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

Ubuntu 18.04 LTS:
  ntp                             1:4.2.8p10+dfsg-5ubuntu7.3
  ntpdate                         1:4.2.8p10+dfsg-5ubuntu7.3
  sntp                            1:4.2.8p10+dfsg-5ubuntu7.3

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

References:
  https://usn.ubuntu.com/4563-1
  CVE-2019-8936

Package Information:
  https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-...

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