Excessive Signature Matching Time Causes Traffic Disruption in BIG-IP AFM IPS Engine

CVE-2024-21771

7.5HIGH

Key Information

Vendor
F5
Status
BIG-IP
Vendor
CVE Published:
14 February 2024

Summary

For unspecified traffic patterns, BIG-IP AFM IPS engine may spend an excessive amount of time matching the traffic against signatures, resulting in Traffic Management Microkernel (TMM) restarting and traffic disruption.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Affected Version(s)

BIG-IP < 17.1.1

BIG-IP < 16.1.4

BIG-IP < 15.1.9

Refferences

https://my.f5.com/manage/s/article/K000137595
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

F5
.