- Vulnerability/
- USN-3707-1
USN-3707-1: NTP vulnerabilities
First published: Mon Jul 09 2018(Updated: )
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)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/ntp | <1:4.2.8p10+dfsg-5ubuntu7.1 | 1:4.2.8p10+dfsg-5ubuntu7.1 |
| =18.04 | ||
| All of | ||
| ubuntu/ntp | <1:4.2.8p10+dfsg-5ubuntu3.3 | 1:4.2.8p10+dfsg-5ubuntu3.3 |
| =17.10 | ||
| All of | ||
| ubuntu/ntp | <1:4.2.8p4+dfsg-3ubuntu5.9 | 1:4.2.8p4+dfsg-3ubuntu5.9 |
| =16.04 | ||
| All of | ||
| ubuntu/ntp | <1:4.2.6.p5+dfsg-3ubuntu2.14.04.13 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13 |
| =14.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2018-7182
- https://ubuntu.com/security/CVE-2018-7183
- https://ubuntu.com/security/CVE-2018-7184
- https://ubuntu.com/security/CVE-2018-7185
- https://ubuntu.com/security/notices/USN-3707-2
- 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
- https://ubuntu.com/security/notices/USN-3707-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for the NTP vulnerabilities?
The vulnerability ID for the NTP vulnerabilities is CVE-2018-7182.
Which versions of Ubuntu are affected by the NTP vulnerabilities?
The NTP vulnerabilities affect Ubuntu 17.10 and Ubuntu 18.04 LTS.
How can a remote attacker exploit the NTP vulnerabilities?
A remote attacker could exploit the NTP vulnerabilities by sending certain malformed mode 6 packets to the NTP server.
What is the impact of the NTP vulnerabilities?
The NTP vulnerabilities can cause ntpd to crash, resulting in a denial of service (DoS) on the affected system.
Where can I find more information about the NTP vulnerabilities?
You can find more information about the NTP vulnerabilities on the Ubuntu Security website.
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