9.8
CRITICAL
CVE-2021-23008
BIG-IP APM Kerberos Authentication Service Response Spoofing Vulnerability
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.

INFO

Published Date :

May 10, 2021, 2:15 p.m.

Last Modified :

May 19, 2021, 6:20 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-23008 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-23008 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 F5 big-ip_access_policy_manager
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-23008.

URL Resource
https://support.f5.com/csp/article/K51213246 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

主流供应商的一些攻击性漏洞汇总

Updated: 1 week, 6 days ago
805 stars 142 fork 142 watcher
Born at : Nov. 8, 2021, 2:12 a.m. This repo has been linked 93 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-23008 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-23008 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://support.f5.com/csp/article/K51213246 No Types Assigned https://support.f5.com/csp/article/K51213246 Vendor Advisory
    Added CWE NIST CWE-287
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 11.5.2 up to (excluding) 11.6.5 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 12.1.0 up to (excluding) 12.1.5 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 13.1.0 up to (excluding) 13.1.3 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 14.1.0 up to (excluding) 14.1.3 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 15.0.0 up to (excluding) 15.1.2 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 16.0.0 up to (excluding) 16.0.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-23008 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.43 }} 0.13%

score

0.71851

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability