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CVE-2021-23028

HIGHCVSS 7.5/10EPSS 0.90%

Last modified

CVE-2021-23028 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4, when JSON content profiles are configured for URLs as part of an F5 Advanced Web Application Firewall (WAF)/BIG-IP ASM security policy and applied to a virtual server, undisclosed requests may cause the BIG-IP ASM bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4, when JSON content profiles are configured for URLs as part of an F5 Advanced Web Application Firewall (WAF)/BIG-IP ASM security policy and applied to a virtual server, undisclosed requests may cause the BIG-IP ASM bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.90%

55.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Advanced Web Application Firewall>= 13.1.3.5, <= 13.1.3.6
F5Big-Ip Advanced Web Application Firewall>= 14.1.3.1, <= 14.1.4.1
F5Big-Ip Advanced Web Application Firewall>= 15.1.1, < 15.1.3.1
F5Big-Ip Advanced Web Application Firewall16.0.1
F5Big-Ip Application Security Manager>= 13.1..3.5, <= 13.1.3.6
F5Big-Ip Application Security Manager>= 14.1.3.1, <= 14.1.4.1
F5Big-Ip Application Security Manager>= 15.1.0, < 15.1.3.1
F5Big-Ip Application Security Manager16.0.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-23028?
On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.2, and 13.1.x before 13.1.4, when JSON content profiles are configured for URLs as part of an F5 Advanced Web Application Firewall (WAF)/BIG-IP ASM security policy and applied to a virtual server, undisclosed requests may cause the BIG-IP ASM bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
How severe is CVE-2021-23028?
CVE-2021-23028 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23028?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23028?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST