Op 5-8-2024 om 23:47 schreef Ralf Quint via Freedos-user:
On 8/5/2024 12:30 PM, Roderick Klein via Freedos-user wrote:
It's not the driver! It has been dissected on various cyber security sites and confirmed by CrowdStrike that the problem is a a typo in a configuration file for CrowdStrike's Falcon Sensor update installer. That causes a parsing error, which (what shouldn't happened in the first place) caused an abort in the startup process of Windows (and only that part is relevant from that video). And thus an endless reboot/blue screen loop, unless that faulty installer config file is manually removed and thus the installation of the intended update is being skipped...

The way I understand it was logic error in the driver, that should have not blown up in the first place. The driver should have done proper syntax checking. Or did I understand wrong ?

https://www.youtube.com/watch?v=ZHrayP-Y71Q

Roderick
AGAIN, the July 19th issue (directly) was not a logic error in the driver, but an error/typo in one of the config files of an update that was erroneously pushed out with an update that day for the "Falcon Sensor", a vulnerability scanner supplied by CrowdStrike via "the cloud". The error in the driver was in the update procedure, that did not properly account for such a stupid error in the config file to occur. No update, no problem. That's why the issue COULD have been easily fixed, if one had immediate physical access to the effected machine, by removing that buggered config file. No config file, no update attempt, no crash.

Thats just the whole headache. Should a device driver, running at ring 0 not have proper syntax checking instead of blowing up a system duo to badly read config file ?

Roderick



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