F5 BIG-IP Data Plane buffer overflow

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9.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in F5 BIG-IP and classified as critical. Affected by this vulnerability is an unknown functionality of the component Data Plane. Such manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2021-22991. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, has been found in F5 BIG-IP (Firewall Software) (the affected version is unknown). Affected by this issue is an unknown code of the component Data Plane. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was disclosed 03/10/2021 as K02566623. The advisory is available at support.f5.com. This vulnerability is handled as CVE-2021-22991. Technical details are unknown but an exploit is available.

It is declared as attacked. This issue was added on 01/18/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 02/01/2022:

Apply updates per vendor instructions.

A possible mitigation has been published immediately after the disclosure of the vulnerability.

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Productinfo

Type

Firewall Software

Vendor

Name

BIG-IP

License

commercial

Website

Vendor: https://f5.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.2
VulDB Meta Temp Score: 9.1

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

01/06/2021 🔍
03/10/2021 +63 days 🔍
03/10/2021 +0 days 🔍
03/12/2021 +2 days 🔍
01/30/2025 +1419 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K02566623
Status: Confirmed

CVE: CVE-2021-22991 (🔍)
GCVE (CVE): GCVE-0-2021-22991
GCVE (VulDB): GCVE-100-171182
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/12/2021 08:36
Updated: 01/30/2025 00:05
Changes: 03/12/2021 08:36 (37), 03/31/2021 22:03 (4), 04/22/2024 14:53 (26), 09/17/2024 05:18 (1), 01/30/2025 00:05 (29)
Complete: 🔍
Cache ID: 216::103