what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-3707-1

Ubuntu Security Notice USN-3707-1
Posted Jul 9, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3707-1 - Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6 packets. A remote attacker could possibly use this issue to cause ntpd to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. Michael Macnair discovered that NTP incorrectly handled certain responses. A remote attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-7182, CVE-2018-7183, CVE-2018-7184, CVE-2018-7185
SHA-256 | 32ce831d1f1118924cb8bef066769217952aeaceb8886b1b83365b1d33fda1a3

Ubuntu Security Notice USN-3707-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3707-1
July 09, 2018

ntp vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in NTP.

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

Details:

Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6
packets. A remote attacker could possibly use this issue to cause ntpd to
crash, resulting in a denial of service. This issue only affected Ubuntu
17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182)

Michael Macnair discovered that NTP incorrectly handled certain responses.
A remote attacker could possibly use this issue to execute arbitrary code.
(CVE-2018-7183)

Miroslav Lichvar discovered that NTP incorrectly handled certain
zero-origin timestamps. A remote attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu
18.04 LTS. (CVE-2018-7184)

Miroslav Lichvar discovered that NTP incorrectly handled certain
zero-origin timestamps. A remote attacker could possibly use this issue to
cause a denial of service. (CVE-2018-7185)

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-5ubuntu7.1

Ubuntu 17.10:
ntp 1:4.2.8p10+dfsg-5ubuntu3.3

Ubuntu 16.04 LTS:
ntp 1:4.2.8p4+dfsg-3ubuntu5.9

Ubuntu 14.04 LTS:
ntp 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13

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

References:
https://usn.ubuntu.com/usn/usn-3707-1
CVE-2018-7182, CVE-2018-7183, CVE-2018-7184, CVE-2018-7185

Package Information:
https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-5ubuntu7.1
https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p10+dfsg-5ubuntu3.3
https://launchpad.net/ubuntu/+source/ntp/1:4.2.8p4+dfsg-3ubuntu5.9
https://launchpad.net/ubuntu/+source/ntp/1:4.2.6.p5+dfsg-3ubuntu2.14.04.13
Login or Register to add favorites

File Archive:

October 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    10 Files
  • 2
    Oct 2nd
    0 Files
  • 3
    Oct 3rd
    12 Files
  • 4
    Oct 4th
    15 Files
  • 5
    Oct 5th
    18 Files
  • 6
    Oct 6th
    16 Files
  • 7
    Oct 7th
    0 Files
  • 8
    Oct 8th
    0 Files
  • 9
    Oct 9th
    0 Files
  • 10
    Oct 10th
    0 Files
  • 11
    Oct 11th
    0 Files
  • 12
    Oct 12th
    0 Files
  • 13
    Oct 13th
    0 Files
  • 14
    Oct 14th
    0 Files
  • 15
    Oct 15th
    0 Files
  • 16
    Oct 16th
    0 Files
  • 17
    Oct 17th
    0 Files
  • 18
    Oct 18th
    0 Files
  • 19
    Oct 19th
    0 Files
  • 20
    Oct 20th
    0 Files
  • 21
    Oct 21st
    0 Files
  • 22
    Oct 22nd
    0 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close