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VuXML IDDescription
30ce591c-947b-11ea-92ab-00163e433440FreeBSD -- Insufficient packet length validation in libalias

Problem Description:

libalias(3) packet handlers do not properly validate the packet length before accessing the protocol headers. As a result, if a libalias(3) module does not properly validate the packet length before accessing the protocol header, it is possible for an out of bound read or write condition to occur.

Impact:

A malicious attacker could send specially constructed packets that exploit the lack of validation allowing the attacker to read or write memory either from the kernel (for the in-kernel NAT implementation) or from the process space for natd (for the userspace implementation).


Discovery 2020-05-12
Entry 2020-05-12
FreeBSD-kernel
ge 12.1 lt 12.1_5

ge 11.4 lt 11.4_1

ge 11.3 lt 11.3_9

CVE-2020-7454
SA-20:12.libalias