Critical severity · published May 10, 2021
CVE-2021-23008
On version 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and all versions of 16.0.x and 11.6.x., BIG-IP APM AD (Active Directory)…
9.8
CVSS
1.3%
EPSS
No
On KEV
Description
On version 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and all versions of 16.0.x and 11.6.x., BIG-IP APM AD (Active Directory) authentication can be bypassed via 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. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BA
Big-ip Access Policy Manager · F5
11.5.2 before 11.6.5; 12.1.0 before 12.1.5; 13.1.0 before 13.1.3; 14.1.0 before 14.1.3; 15.0.0 before 15.1.2; 16.0.0 before 16.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23008
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-23008
Vendor Advisory
https://support.f5.com/csp/article/K51213246
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