Advisory Details

August 2nd, 2022

NetBSD Kernel stat System Call Uninitialized Memory Information Disclosure Vulnerability

CVE ID
CVSS SCORE	5.5, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AFFECTED VENDORS	NetBSD
AFFECTED PRODUCTS	Kernel
VULNERABILITY DETAILS	This vulnerability allows local attackers to disclose sensitive information on affected installations of NetBSD Kernel. 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 stat system call. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.
ADDITIONAL DETAILS	NetBSD has issued an update to correct this vulnerability. More details can be found at: https://mail-index.netbsd.org/source-changes/2021/08/15/msg131566.html
DISCLOSURE TIMELINE	2022-01-19 - Vulnerability reported to vendor 2022-08-02 - Coordinated public release of advisory 2022-08-03 - Advisory Updated
CREDIT	Reno Robert of Trend Micro Zero Day Initiative

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