Forum Discussion

Aurel's avatar
Aurel
Icon for Cirrus rankCirrus
Feb 18, 2019

ASM : Context AMF Body

Hi, I am having several signatures match for a content of a png file upload, and also an HTTP compliance violation (Bad multipart parameters parsing : Chunk value does not contain any CRLF).   ASM...
ASM Advanced WAF
security
Mica's avatar
Mica
Icon for Nimbostratus rankNimbostratus
Nov 22, 2019

Hi,

Specifying that the parameter is used for file upload was working for me in version 11.5.1. Signature checks was not initiated for the binary code of the file so that prevented a lot of false positive.

Now, in version 13.1.1, ASM is seeing AMF content instead of binary file upload and trigger a lot of signatures and violations. For now the only workarouand I can see is to disable all signatures on the URL but it's not a good solution.