CVE-2019-11331 : Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for mo

Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for modes where a fixed port number is not required, which makes it easier for remote attackers to conduct off-path attacks.

Published 2019-04-18 22:29:01

Updated 2020-08-24 17:37:01

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2019-11331

NTP » NTP » Version: N/A
cpe:2.3:a:ntp:ntp:-:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2019-11331

EPSS FAQ

2.90%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 85 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-11331

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
8.1	HIGH	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	2.2	5.9	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

References for CVE-2019-11331

https://tools.ietf.org/html/draft-gont-ntp-port-randomization-00

draft-gont-ntp-port-randomization-00 - Port Randomization in the Network Time Protocol Version 4
Third Party Advisory
http://www.securityfocus.com/bid/108010

NTP CVE-2019-11331 Unspecified Security Vulnerability
Third Party Advisory
https://support.f5.com/csp/article/K09940637
https://support.f5.com/csp/article/K09940637?utm_source=f5support&utm_medium=RSS

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Vulnerability Details : CVE-2019-11331

Products affected by CVE-2019-11331

Exploit prediction scoring system (EPSS) score for CVE-2019-11331

CVSS scores for CVE-2019-11331

References for CVE-2019-11331