CVE-2024-21771: big-ip advanced DoS — Fix

Description

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

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
f5	big-ip_advanced_firewall_manager	15.1.0 — 15.1.9
f5	big-ip_advanced_firewall_manager	16.1.0 — 16.1.4
f5	big-ip_advanced_firewall_manager	All

References

Advisories & Patches

https://my.f5.com/manage/s/article/K000137595 https://my.f5.com/manage/s/article/K000137595

Frequently Asked Questions

What is CVE-2024-21771? +

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 It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-21771? +

CVE-2024-21771 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-21771? +

CVE-2024-21771 affects products from f5, specifically: big-ip_advanced_firewall_manager. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21771? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-21771