CVE-2021-23053

MEDIUM

5.3

CVSS Score

Published: September 14, 2021 at 12:28 PM UTC

Updated: June 17, 2026 at 03:38 AM UTC

2 products affected across 1 vendorBig IP Application Security ManagerBig IP Advanced Web Application Firewall

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Severity

MEDIUM5.3

Exploit prediction

EPSS 0.9%

Description

On version 15.1.x before 15.1.3, 14.1.x before 14.1.3.1, and 13.1.x before 13.1.3.6, when the brute force protection feature of BIG-IP Advanced WAF or BIG-IP ASM is enabled on a virtual server and the virtual server is under brute force attack, the MySQL database may run out of disk space due to lack of row limit on undisclosed tables in the MYSQL database. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Big IP Advanced Web Application Firewall · F5

95%

13.1.0 ≤ v < 13.1.3.614.1.0 ≤ v < 14.1.3.115.1 ≤ v < 15.1.315.1.0 ≤ v < 15.1.3

Affected range stops below 13.1.3.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement

Big IP Application Security Manager · F5

95%

13.1.0 ≤ v < 13.1.3.614.1.0 ≤ v < 14.1.3.115.1 ≤ v < 15.1.315.1.0 ≤ v < 15.1.3

Affected range stops below 13.1.3.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1.3.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://support.f5.com/csp/article/K36942191

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://support.f5.com/csp/article/K36942191

CVSS

5.3MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: LOW

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-400CWE-770

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