CVE-2021-23015 : What You Need to Know
Get insights into CVE-2021-23015 affecting BIG-IP versions, allowing authenticated users to bypass Appliance Mode restrictions via undisclosed iControl REST endpoints. Learn about the impact and mitigation measures.
A privilege escalation vulnerability, CVE-2021-23015 affects BIG-IP versions 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, and 13.1.0.8 through 13.1.3.6, along with all versions of 16.0.x. This vulnerability allows an authenticated user with the 'Administrator' role to bypass Appliance Mode restrictions using undisclosed iControl REST endpoints.
Understanding CVE-2021-23015
This section delves into the details of the CVE-2021-23015 vulnerability.
What is CVE-2021-23015?
CVE-2021-23015 is a privilege escalation vulnerability identified in BIG-IP versions mentioned earlier. It enables a user with the 'Administrator' role to bypass Appliance Mode restrictions.
The Impact of CVE-2021-23015
The CVE-2021-23015 vulnerability poses a significant risk as it allows an authenticated user to elevate their privileges and potentially perform unauthorized actions.
Technical Details of CVE-2021-23015
Here are the technical aspects of the CVE-2021-23015 vulnerability.
Vulnerability Description
The vulnerability arises from undisclosed iControl REST endpoints that can be exploited by an authenticated user with the 'Administrator' role.
Affected Systems and Versions
BIG-IP software versions 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, and 13.1.0.8 through 13.1.3.6 are impacted, as well as all versions of 16.0.x.
Exploitation Mechanism
An attacker, under the guise of an authenticated user with elevated privileges, can exploit the vulnerability by utilizing specific iControl REST endpoints.
Mitigation and Prevention
Learn how to protect your systems from the CVE-2021-23015 vulnerability.
Immediate Steps to Take
Users are advised to update their BIG-IP software to the patched versions released by the vendor.
Long-Term Security Practices
Implement strict access control policies and regularly monitor and audit user activities to prevent unauthorized privilege escalation.
Patching and Updates
F5 has provided patches for the affected software versions. It is crucial to apply these patches promptly to mitigate the risk of exploitation.