PT-2021-23711 · Eltima · Eltima Usb Network Gate

Kasif Dekel · Published 2021-12-07 · Updated 2021-12-08 · CVE-2021-42988

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Eltima USB Network Gate versions 7.0.1370 through 9.2.2420

Description The issue allows local attackers to execute arbitrary code in kernel mode or cause a denial of service, resulting in memory corruption and OS crash, via specially crafted I/O Request Packet. This is due to a Buffer Overflow in the IOCTL Handler 0x22001B.

Recommendations For Eltima USB Network Gate versions 7.0.1370 through 9.2.2420, consider disabling the IOCTL Handler 0x22001B as a temporary workaround until a patch is available. Restrict access to the vulnerable IOCTL handler to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-42988

Affected Products

Eltima Usb Network Gate

References · 3

• 🔥 https://sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-42988 · Security Note
• https://osv.dev/vulnerability/CVE-2021-42988 · Vendor Advisory