PT-2022-3958 · Advantech · Advantech Deviceon/Iedge Server

Yuri Kramarz · Published 2022-01-18 · Updated 2022-05-31 · CVE-2021-40389

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 DeviceOn/iEdge Server version 1.0.2

Description The issue is related to incorrect default permission settings, allowing an attacker to escalate privileges using a specially-crafted file. This can lead to an attacker gaining NT SYSTEM authority. The vulnerability can be triggered by providing a malicious file.

Recommendations For Advantech DeviceOn/iEdge Server version 1.0.2, consider restricting access to sensitive files and directories to prevent unauthorized modifications until a patch is available. As a temporary workaround, monitor system activity closely for signs of privilege escalation attempts. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

BDU:2022-04790

CVE-2021-40389

Affected Products

Advantech Deviceon/Iedge Server

References · 6

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1400 · Exploit
• https://bdu.fstec.ru/vul/2022-04790 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-40389 · Security Note
• https://osv.dev/vulnerability/CVE-2021-40389 · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2022011913 · Note
• https://t.me/cvenotify/30925 · Telegram Post