Advisory Details

May 14th, 2024

Microsoft Windows cldflt Type Confusion Information Disclosure Vulnerability

ZDI-24-452
ZDI-CAN-22417

CVE ID CVE-2024-30034
CVSS SCORE 8.4, AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows local attackers to disclose sensitive information on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the Cloud Files Mini Filter Driver, cldflt.sys. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to disclose information in the context of the kernel.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30034
DISCLOSURE TIMELINE
  • 2024-01-23 - Vulnerability reported to vendor
  • 2024-05-14 - Coordinated public release of advisory
CREDIT Wei Lei and Sergey Kornienko (@b1thvn_) of PixiePoint Security
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