PT-2021-20537 · Advantech · Advantech Webaccess

Published 2021-06-11 · Updated 2021-06-21 · CVE-2021-34540

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Advantech WebAccess versions 8.4.2 through 8.4.4

Description: The issue allows for cross-site scripting (XSS) attacks via the username column of the "bwRoot.asp" page of WADashboard. This occurs because the application does not properly validate user input, allowing an attacker to inject malicious scripts.

Recommendations: For Advantech WebAccess versions 8.4.2 through 8.4.4, consider restricting access to the bwRoot.asp page of WADashboard until a patch is available. As a temporary workaround, avoid using the username column in the affected page 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

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-34540

Affected Products

Advantech Webaccess

References · 5

• 🔥 https://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34540 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-34540 · Security Note
• https://advantech.com/support · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34540 · Vendor Advisory
• https://t.me/cvenotify/16179 · Telegram Post