SB2020060252 - Authentication bypass in NTP component in F5 BIG-IP
Published: June 2, 2020 Updated: December 25, 2020
Security Bulletin ID
SB2020060252
Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Authentication Bypass by Spoofing (CVE-ID: CVE-2020-11868)
The 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.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.