PT-2021-4946 · Advantech · Advantech R-Seenet

Yuri Kramarz · Published 2021-08-23 · Updated 2022-08-24 · CVE-2021-21911

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 Advantech R-SeeNet version 2.4.15

Description The issue is related to insufficient access restrictions to the C:R-SeeNet directory, which can be exploited by an attacker to escalate privileges using a specially crafted malicious file. This can allow the attacker to gain NT SYSTEM authority.

Recommendations For Advantech R-SeeNet version 2.4.15, consider restricting access to the C:R-SeeNet directory to minimize the risk of exploitation until a patch is available. As a temporary workaround, avoid using the vulnerable executable file C:R-SeeNetR SeeNet.exe until the issue is resolved.

Exploit

Fix

Incorrect Default Permissions

Improper Privilege Management

Weakness Enumeration

CWE-276

CWE-269

Related Identifiers

BDU:2021-05700

CVE-2021-21911

Affected Products

Advantech R-Seenet

References · 7

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1360 · Exploit
• https://safe-surf.ru/upload/VULN/VULN-20211124.3.pdf · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-21911 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21911 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05700 · Security Note
• https://cybersecurity-help.cz/vdb/SB2021112314 · Note
• https://securitylab.ru/vulnerability/526790.php · Note