Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-11868 |
CWE-ID | CWE-290 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
ntp Server applications / Other server solutions |
Vendor | ntp.org |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU27395
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-11868
CWE-ID:
CWE-290 - Authentication Bypass by Spoofing
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication and perform a denial of service (DoS) attack.
The vulnerability exists due to ntpd allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.A remote attacker can bypass authentication and block synchronization.
MitigationInstall updates from vendor's website.
Vulnerable software versionsntp: 4.2.0 - 4.3.99
External linkshttp://support.ntp.org/bin/view/Main/NtpBug3592
http://bugzilla.redhat.com/show_bug.cgi?id=1716665
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.