Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-22991

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.587
EPSS Ranking 98.1%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 6.8
Proposed Action
The Traffic Management Microkernel of BIG-IP ASM Risk Engine has a buffer overflow vulnerability, leading to a bypassing of URL-based access controls.
Ransomware Campaign
Unknown
Products affected by CVE-2021-22991


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