(Denial of service) Router reboots on visiting filtered URL

[carefulcomputer]

I have router version 386.3_2 on RT-AC5300. It seems to reboot when a filtered url is visited from a connected computer.
Steps to reproduce :

1. Go to Firewall->URL Filter
2. Enable URL filter , filter type 'Blacklist'
3. Add a keyword 'drama' (i had 5 other fqdn url in list if that matters)
4. Apply
5. From a connected computer open a url with word 'drama' (e.g. dramacool.city) in that.
6. Observe modem behavior. It will stop responding and reboot.

This could cause mild denial of service attacks by trying to load a blocked domain making router crash and stop all internet access.

 

[RMerlin]

Works fine for me.

 

[carefulcomputer]

are there any logs or anything I can provide to help debug. I can reproduce it 100% of time.

 

[RMerlin]

The system log might give you a hint as to what is happening, otherwise it would require serial port output to get more details as to why your router is crashing.

 

[eibgrad]

If it was me, I would reset the router to factory defaults and start over, just to make sure it's not do to some oddball conflict you accidentally created. Then test it again *before* you made too many other changes.