SB2021042905 - Authentication bypass in BIG-IP APM AD
Published: April 29, 2021
Security Bulletin ID
SB2021042905
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2021-23008)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests. A remote attacker can bypass authentication process using a spoofed AS-REP (Kerberos Authentication Service Response) response sent over a hijacked KDC (Kerberos Key Distribution Center) connection, or from an AD server compromised by an attacker.
Successful exploitation of the vulnerability may allow an attacker to gain full control over the affected system.
Remediation
Install update from vendor's website.