Advisory Details

August 14th, 2023

Microsoft Windows Bluetooth AVDTP Protocol Integer Underflow Information Disclosure Vulnerability

CVE ID	CVE-2023-35387
CVSS SCORE	6.2, AV:A/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:H
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must connect a malicious Bluetooth device. The specific flaw exists within the processing of AVDTP commands. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before reading from memory. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code 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-2023-35387
DISCLOSURE TIMELINE	2023-05-01 - Vulnerability reported to vendor 2023-08-14 - Coordinated public release of advisory
CREDIT	Lucas Leong (@_wmliang_) of Trend Micro Zero Day Initiative

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