August 12, 2024 at 02:02PM
A flaw in the CLFS driver triggers blue screen crashes across various Windows versions. The bug involves inadequate validation of log file data, enabling attackers to cause system crashes at will. Despite a medium security score, the issue remains unresolved, posing potential disruption to business operations. Microsoft is yet to release a patch, while Fortra’s proof of concept exploit is being flagged as malware by Windows Defender. Acknowledgment and a fix from Microsoft are pending.
From the meeting notes, it is clear that there is a serious bug in the Common Log File System (CLFS) driver that can trigger the blue screen of death across recent versions of Windows. The bug, labeled CVE-2024-6768, allows an attacker to craft a file with incorrect size information, confusing the driver and effectively causing a blue screen crash by triggering KeBugCheckEx.
While the bug does not affect the integrity or confidentiality of data, it does allow for wanton crashes that can disrupt business operations or potentially cause data loss. Additionally, it poses the risk of being paired with other exploits to cover an attacker’s tracks or take down a service where they otherwise shouldn’t be able to.
Fortra discovered this vulnerability and reported it to Microsoft, but as of now, Microsoft has not acknowledged it as a vulnerability or released a fix. As a result, organizations are advised to run Windows Defender and avoid running any binary that exploits the bug until Microsoft issues a patch.
It is important to note that there is still no fix from Microsoft, and organizations must be cautious about the potential impact of CVE-2024-6768 on their systems until further action is taken by Microsoft.