Advisory Details

May 19th, 2020

FreeBSD Kernel NAT Out-Of-Bounds Access Remote Code Execution Vulnerability

CVE ID	CVE-2020-7454
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	FreeBSD
AFFECTED PRODUCTS	Kernel
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of FreeBSD Kernel. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of NAT. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of kernel.
ADDITIONAL DETAILS	FreeBSD has issued an update to correct this vulnerability. More details can be found at: https://www.freebsd.org/security/advisories/FreeBSD-SA-20:12.libalias.asc
DISCLOSURE TIMELINE	2020-03-15 - Vulnerability reported to vendor 2020-05-19 - Coordinated public release of advisory
CREDIT	Lucas Leong (@_wmliang_) of Trend Micro's Zero Day Initiative

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