CVE-2021-22991

Severity CVSS v4.0:

Pending analysis

Type:

CWE-119 Buffer Errors

Publication date:

31/03/2021

Last modified:

02/04/2025

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

6.80

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:f5:big-ip_access_policy_manager::::::::	12.1.0 (including)	12.1.5.3 (excluding)
cpe:2.3:a:f5:big-ip_access_policy_manager::::::::	13.1.0 (including)	13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_access_policy_manager::::::::	14.1.0 (including)	14.1.4 (excluding)
cpe:2.3:a:f5:big-ip_access_policy_manager::::::::	15.1.0 (including)	15.1.2.1 (excluding)
cpe:2.3:a:f5:big-ip_access_policy_manager::::::::	16.0.0 (including)	16.0.1.1 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager::::::::	12.1.0 (including)	12.1.5.3 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager::::::::	13.1.0 (including)	13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager::::::::	14.1.0 (including)	14.1.4 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager::::::::	15.1.0 (including)	15.1.2.1 (excluding)
cpe:2.3:a:f5:big-ip_advanced_firewall_manager::::::::	16.0.0 (including)	16.0.1.1 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall::::::::	12.1.0 (including)	12.1.5.3 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall::::::::	13.1.0 (including)	13.1.3.6 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall::::::::	14.1.0 (including)	14.1.4 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall::::::::	15.1.0 (including)	15.1.2.1 (excluding)
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall::::::::	16.0.0 (including)	16.0.1.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-22991

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools