Vulnerability identifier: #VU10806

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-1549

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Network Time Protocol
Server applications / Other server solutions

Vendor: ntp.org

Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to insufficient security restrictions. A remote attacker can create multiple crafted ephemeral associations to bypass security restrictions and modify the clock.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Network Time Protocol: 4.2.0a - 4.3.70

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External links
http://support.ntp.org/bin/view/Main/NtpBug3012

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.