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CVE-2021-22991

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, 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.

Related Files

F5 Big IP TMM uri_normalize_host Information Disclosure / Out-Of-Bounds Write
Posted Mar 11, 2021
Authored by Google Security Research, Felix Wilhelm

Big IP's Traffic Management Microkernels (TMM) URI normalization incorrectly handles invalid IPv6 hostnames allowing for information disclosure and an out-of-bounds write condition.

tags | exploit, info disclosure
advisories | CVE-2021-22991
SHA-256 | 3871783e2fe19713b45a5661f9772f7a4d4281e5f8687d7bb3041ddb2bd1b662
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