Data leak/High CPU
Posted: Fri May 03, 2019 9:38 am
Web Example: Webmd
The issue is the the adblockplus extension is unable to block links as a function, but blocks the ad using the objects which are loaded within the site.
Currently there is an issue where AdBlock+ functions as intended, it blocks the ads on this site, although it does it hundreds of times.
The script on the site reloads the ad, and it blocks it again. I studied the internals of the site, just in case they had loaded a miner onto their site which was activated bu adblock or something, there are no scripts other than ads which function past the initial loadup which took about 7500ms in chrome.
225 requests, 2.4MB, 5.81s total loading time on the main site, okay cool.
Then you click on a article, watching the network usage in developer options, its loading scripts, gifs, and the XHR's which are blocked by ad block. 22,14 total seconds. Then if you take a look at the processes, the website is using upwards of 1.6GB of RAM, and consistently bouncing between a reload ~15% cpu usage, to upwards of 100% spikes and hanging there.
I'm unsure of how many sites are effected by this currently, but it needs to be looked into, for some reason, depending on the link you maneuver to within the site, the CPU usage can be debilitating to functionality of the site.
The issue is the the adblockplus extension is unable to block links as a function, but blocks the ad using the objects which are loaded within the site.
Currently there is an issue where AdBlock+ functions as intended, it blocks the ads on this site, although it does it hundreds of times.
The script on the site reloads the ad, and it blocks it again. I studied the internals of the site, just in case they had loaded a miner onto their site which was activated bu adblock or something, there are no scripts other than ads which function past the initial loadup which took about 7500ms in chrome.
225 requests, 2.4MB, 5.81s total loading time on the main site, okay cool.
Then you click on a article, watching the network usage in developer options, its loading scripts, gifs, and the XHR's which are blocked by ad block. 22,14 total seconds. Then if you take a look at the processes, the website is using upwards of 1.6GB of RAM, and consistently bouncing between a reload ~15% cpu usage, to upwards of 100% spikes and hanging there.
I'm unsure of how many sites are effected by this currently, but it needs to be looked into, for some reason, depending on the link you maneuver to within the site, the CPU usage can be debilitating to functionality of the site.