Microsoft · Windows Cloud Files Mini Filter Driver · CVE-2024-30085
**Name of the Vulnerable Software and Affected Versions**
Windows Cloud Files Mini Filter Driver (affected versions not specified)
**Description**
A heap-based buffer overflow exists in the Windows Cloud Files Mini Filter Driver `cldflt.sys`. This issue allows a local attacker to escalate privileges from a regular user to SYSTEM. The flaw can be triggered by crafting a custom reparse point to corrupt an adjacent ` WNF STATE DATA` object. This corruption can be leveraged to leak kernel pointers from an ALPC handle table object. Further exploitation involves corrupting a `PipeAttribute` object to leak token addresses and override privileges. Technical exploitation methods include using WNF Out-of-Bounds (OOB), Pipe Attributes, ALPC, and I/O Ring mechanisms to achieve arbitrary kernel read/write primitives or flip the ` KTHREAD.PreviousMode` and strip ` EPROCESS.Protection`.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.