CVE-2021-31728 - CVE House
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Status published High CVE-2021-31728

Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware 2.74.0.150...

Vulnerability Description

Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware 2.74.0.150 allows a non-privileged process to open a handle to \.\ZemanaAntiMalware, register itself with the driver by sending IOCTL 0x80002010, allocate executable memory using a flaw in IOCTL 0x80002040, install a hook with IOCTL 0x80002044 and execute the executable memory using this hook with IOCTL 0x80002014 or 0x80002018, this exposes ring 0 code execution in the context of the driver allowing the non-privileged process to elevate privileges.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from malwarefox

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CVE-2021-31727
Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware 2.74.0.150...
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CVE-2018-6606
An issue was discovered in MalwareFox AntiMalware 2.74.0.150. Improper access...
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CVE-2018-6593
An issue was discovered in MalwareFox AntiMalware 2.74.0.150. Improper access...
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CVE-2018-5714
In Malwarefox Anti-Malware 2.72.169, the driver file (zam64.sys) allows local...
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CVE-2018-5713
In Malwarefox Anti-Malware 2.72.169, the driver file (zam64.sys) allows local...
High 7.8

Affected Vendor

Affected Software

antimalware
Vulnerable Versions:
2.74.0.150

Timeline

Official Publish: May 17th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.