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CVE-2021-22992

Status Candidate

Overview

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, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may allow remote code execution (RCE), leading to complete system compromise. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Related Files

F5 Big IP ASM is_hdr_criteria_matches Buffer Overflow
Posted Mar 11, 2021
Authored by Google Security Research, Felix Wilhelm

The bd daemon, which runs as part of the F5 BIG-IP Application Security Manager (ASM), is vulnerable to a stack-based buffer overflow when processing overlong HTTP response headers in the is_hdr_criteria_matches function.

tags | exploit, web, overflow
advisories | CVE-2021-22992
SHA-256 | 9c44ca360a14fa4cc12518c3c7b3dc3db600141f5960afa5516ad2e74a06f1b5
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