#VU10801 Security restrictions bypass in Network Time Protocol - CVE-2018-7170

Vulnerability identifier: #VU10801

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-7170

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 authenticated 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
Update to version 4.2.8p11.

Vulnerable software versions

Network Time Protocol: 4.2.0a - 4.2.8p10

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External links
https://www.ntp.org/downloads.html
https://www.freebsd.org/ports/master-index.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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