Impact: Important Public Date: 2019-04-18 CWE: CWE-384 Bugzilla: 1703341: CVE-2019-11331 ntp: Using port 123 for modes where a fixed port number is not required facilitates off-path attacks. 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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-11331 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 8.1 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Virtualization 4 | ntp | Under investigation |
| Red Hat Enterprise Linux 7 | ntp | Under investigation |
| Red Hat Enterprise Linux 6 | ntp | Under investigation |
| Red Hat Enterprise Linux 5 | ntp | Under investigation |
Vulmon