CVE-2021-21912

CVSS V2 High 7.2 CVSS V3 High 7.8

Description

A privilege escalation vulnerability exists in the Windows version of installation for Advantech R-SeeNet Advantech R-SeeNet 2.4.15 (30.07.2021). A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.

Overview

CVE ID
CVE-2021-21912

Assigner
talos-cna@cisco.com

Vulnerability Status
Analyzed

Published Version
2021-12-22T19:15:10

Last Modified Date
2022-10-05T17:25:19

Weakness Enumerations

CWE	URL
CWE-276	http://cwe.mitre.org/data/definitions/276.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
		AND
cpe:2.3:a:advantech:r-seenet:2.4.15:::::::*	1	OR
cpe:2.3:o:microsoft:windows:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1360	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-21912
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21912

History

Created	Old Value	New Value	Data Type	Notes
2022-04-20 17:01:49				Added to TrackCVE
2022-12-06 04:37:21	2021-12-22T19:15Z	2021-12-22T19:15:10	CVE Published Date	updated
2022-12-06 04:37:21		2022-10-05T17:25:19	CVE Modified Date	updated
2022-12-06 04:37:21		Analyzed	Vulnerability Status	updated