CVE-2017-16237

published 2017-11-03

CVE-2017-16237: In Vir.IT eXplorer Anti-Virus before 8.5.42, the driver file (VIAGLT64.SYS) contains an Arbitrary Write vulnerability because of not validating input values…

Priority P2 73 high 7.8 CVSS 3.0

AV L AC L PR L UI N S U C H I H A H

ITW EXPLOIT VulnCheck KEV

In Vir.IT eXplorer Anti-Virus before 8.5.42, the driver file (VIAGLT64.SYS) contains an Arbitrary Write vulnerability because of not validating input values from IOCtl 0x8273007C.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
tgsoft	vir.it_explorer	< 8.5.42	8.5.42

Detection & IOCs extracted from sources · hover to see the quote

filename VIAGLT64.SYS↗

other IOCtl 0x8273007C↗

path \\.\viragtlt↗

command DeviceIoControl(hDevice, 0x8273007C, input, sizeof(input), NULL, 0, &dwRetBytes, NULL)↗

process winlogon.exe↗

bytes↗

\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60

• · The _SEP_TOKEN_PRIVILEGES offset (0x40) used in the exploit is hardcoded and may vary across different Windows kernel versions, potentially limiting reliability on untested OS builds. ↗

CVSS provenance

nvd v3.0 7.8 HIGH CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 4.6 MEDIUM AV:L/AC:L/Au:N/C:P/I:P/A:P

vulncheck 7.8 HIGH

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