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CVE-2021-23050

HIGHCVSS 7.5/10EPSS 0.45%

Last modified

CVE-2021-23050 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3 and NGINX App Protect on all versions before 3.5.0, when a cross-site request forgery (CSRF)-enabled policy is configured on a virtual server, an undisclosed HTML response may cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3 and NGINX App Protect on all versions before 3.5.0, when a cross-site request forgery (CSRF)-enabled policy is configured on a virtual server, an undisclosed HTML response may cause the 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
0.45%

36.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Advanced Web Application Firewall>= 15.1.0, < 15.1.3.1
F5Big-Ip Advanced Web Application Firewall>= 16.0.0, < 16.0.1.2
F5Big-Ip Application Security Manager>= 15.1.0, < 15.1.3.1
F5Big-Ip Application Security Manager>= 16.0.0, < 16.0.1.2
F5Nginx App Protect>= 1.0.0, <= 1.3.0
F5Nginx App Protect>= 2.0.0, <= 2.3.0
F5Nginx App Protect>= 3.0.0, < 3.5.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-23050?
On BIG-IP Advanced WAF and BIG-IP ASM version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3 and NGINX App Protect on all versions before 3.5.0, when a cross-site request forgery (CSRF)-enabled policy is configured on a virtual server, an undisclosed HTML response may cause the bd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
How severe is CVE-2021-23050?
CVE-2021-23050 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23050?
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-2021-23050?

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

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Source: NVD / NIST