PT-2021-7294 · Advantech · Advantech Wise-Paas/Ota Server

Yuri Kramarz · Published 2021-11-02 · Updated 2022-07-30 · CVE-2021-40397

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Advantech WISE-PaaS/OTA Server version 3.0.9

Description A privilege escalation issue exists due to improper default permission settings, allowing an attacker to elevate privileges to NT SYSTEM authority by replacing a specially-crafted file in the system. This can be triggered by providing a malicious file.

Recommendations For Advantech WISE-PaaS/OTA Server version 3.0.9, consider restricting access to sensitive files and directories to minimize the risk of exploitation until a patch is available. As a temporary workaround, monitor file replacements and system changes closely to detect potential malicious activity. 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:2022-05387

CVE-2021-40397

Affected Products

Advantech Wise-Paas/Ota Server

References · 4

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1409 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-40397 · Security Note
• https://osv.dev/vulnerability/CVE-2021-40397 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-05387 · Security Note