When you configure WAF on VIDZMO Application Gateway, Azure-managed OWASP rules are enabled by default, and a few of these rules can create some issues in uploading, transcoding, workflows, etc. while using the VIDIZMO Application. Below, we have discussed their cause, symptoms,  and resolution. Click, to see: How to Manage WAF Rules.


Azure-managed OWASP Rules Set 2.2.9 

1. Upload Failed Issue

Symptoms

If you try to upload media on the portal and it fails during the upload.


Cause

You will get below error



Resolution

To avoid upload stop working, disable/ turn off Inspect request body under Global Parameter.


2. Workflow Fails while Transcoding

Symptoms  

After the media upload successfully, the workflow fails at 11.1 % on transcoding.


Cause  

This issue is caused by the following error



Resolution

To avoid this issue, Disable/ Turn off Request Missing User-Agent and Accept header rules respectively.

Rule ID: 960009, 960015

3. Workflow fails on transcoding with 2 tries

Symptoms  

Workflow fail at 100 % on transcoding with 2 tries


Cause  

This issue is caused by the following error



Resolution

To avoid this issue Disable/ Turn off rule Request content type is not allowed by policy. 

Rule ID: 960010


4. Thumbnail Capture failed

Symptoms  

At the time of capturing thumbnail, it does not capture successfully and you get an error message.


Cause  

This issue is caused by the following error.



Resolution

To avoid this issue, Disable/ Turn off rule Possible Remote File Inclusion (RFI) Attack: Off-Domain Reference/Link. 

Rule ID: 950120 


Azure-managed OWASP rules Rule Set 3.0  

1. Upload Failed Issue

Symptoms

If you try to upload media on the portal and it fails during the upload.


Cause

You will get below error



Resolution

To avoid upload stop working, disable/ turn off Inspect request body under Global Parameter.


2. Transcode Failed Issue

Symptoms  

Media uploads successfully but it does not transcode and you get transcoding failed error.


Cause  

It is caused by the below error.

Resolution 

To avoid abrupt transcoding fail error, disable/ turn off rule Request content type is not allowed by policy.

Rule ID: 920420


3. Thumbnail Capture failed 

Symptoms  

At the time of capturing thumbnail, it does not capture successfully and you get an error message. 


Cause  

You will get below error



Resolution

To help avoid thumbnail capture failed error, disable/ turn off rule Possible Remote File Inclusion (RFI) Attack: Off-Domain Reference/Link.

Rule ID: 931130


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