Bug ID 1113753: Signatures might not be detected when using truncated multipart requests

Last Modified: Dec 13, 2023

Affected Product(s):
BIG-IP ASM(all modules)

Fixed In:
17.1.1, 16.1.4, 15.1.10

Opened: Jun 13, 2022

Severity: 4-Minor

Symptoms

On special cases when sending long requests that include a multipart section, signatures that should be detected in the multipart body might not be detected.

Impact

Signature is not detected.

Conditions

1. WAF-policy is attached to virtual server. 2. Signatures are enabled in the WAF policy. 3. Signatures contain special characters, i.e. ;"=\n 4. Request is longer than the value in max_raw_request_len. 5. Sending a multipart request.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips