Design/Logic Flaw

2021-05-1713:15:00

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7.8 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.7%

JSON

Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware 2.74.0.150 where IOCTL’s 0x80002014, 0x80002018 expose unrestricted disk read/write capabilities respectively. A non-privileged process can open a handle to .\ZemanaAntiMalware, register with the driver using IOCTL 0x80002010 and send these IOCTL’s to escalate privileges by overwriting the boot sector or overwriting critical code in the pagefile.

CPENameOperatorVersion
antimalwareeq2.74.0.150

CPE	Name	Operator	Version
	antimalware	eq	2.74.0.150

References

github.com/irql0/CVE-2021-31728/blob/master/CVE-2021-31727.md