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CVE-2021-22984

MEDIUMCVSS 6.1/10EPSS 0.63%

Last modified

CVE-2021-22984 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. On BIG-IP Advanced WAF and ASM version 15.1.x before 15.1.0.2, 15.0.x before 15.0.1.4, 14.1.x before 14.1.2.5, 13.1.x before 13.1.3.4, 12.1.x before 12.1.5.2, and 11.6.x before 11.6.5.2, when receiving a unauthenticated client request with a maliciously crafted URI, a BIG-IP Advanced WAF or ASM virtual server configured with a DoS profile with Proactive Bot Defense (versions prior to 14.1.0), or a Bot Defense profile (versions 14.1.0 and later), may subject clients and web servers to Open Redirection attacks. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

On BIG-IP Advanced WAF and ASM version 15.1.x before 15.1.0.2, 15.0.x before 15.0.1.4, 14.1.x before 14.1.2.5, 13.1.x before 13.1.3.4, 12.1.x before 12.1.5.2, and 11.6.x before 11.6.5.2, when receiving a unauthenticated client request with a maliciously crafted URI, a BIG-IP Advanced WAF or ASM virtual server configured with a DoS profile with Proactive Bot Defense (versions prior to 14.1.0), or a Bot Defense profile (versions 14.1.0 and later), may subject clients and web servers to Open Redirection attacks. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
0.63%

45.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
F5Big-Ip Advanced Web Application Firewall>= 11.6.1, < 11.6.5.2
F5Big-Ip Advanced Web Application Firewall>= 12.1.0, < 12.1.5.2
F5Big-Ip Advanced Web Application Firewall>= 13.1.0, < 13.1.3.4
F5Big-Ip Advanced Web Application Firewall>= 14.1.0, < 14.1.2.5
F5Big-Ip Advanced Web Application Firewall>= 15.0.0, < 15.0.1.4
F5Big-Ip Advanced Web Application Firewall>= 15.1.0, < 15.1.0.2
F5Big-Ip Application Security Manager>= 11.6.1, < 11.6.5.2
F5Big-Ip Application Security Manager>= 12.1.0, < 12.1.5.2
F5Big-Ip Application Security Manager>= 13.1.0, < 13.1.3.4
F5Big-Ip Application Security Manager>= 14.1.0, < 14.1.2.5
F5Big-Ip Application Security Manager>= 15.0.0, < 15.0.1.4
F5Big-Ip Application Security Manager>= 15.1.0, < 15.1.0.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-22984?
On BIG-IP Advanced WAF and ASM version 15.1.x before 15.1.0.2, 15.0.x before 15.0.1.4, 14.1.x before 14.1.2.5, 13.1.x before 13.1.3.4, 12.1.x before 12.1.5.2, and 11.6.x before 11.6.5.2, when receiving a unauthenticated client request with a maliciously crafted URI, a BIG-IP Advanced WAF or ASM virtual server configured with a DoS profile with Proactive Bot Defense (versions prior to 14.1.0), or a Bot Defense profile (versions 14.1.0 and later), may subject clients and web servers to Open Redirection attacks. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
How severe is CVE-2021-22984?
CVE-2021-22984 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22984?
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-2021-22984?

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

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Source: NVD / NIST