PT-2021-22930 · Unknown · Opensis Classic

Kietna-68 · Published 2021-10-11 · Updated 2021-10-18 · CVE-2021-40542

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 Opensis-Classic version 8.0

Description The issue allows an unauthenticated user to inject and execute JavaScript code through the link url parameter in Ajax url encode.php, resulting in cross-site scripting (XSS).

Recommendations For Opensis-Classic version 8.0, consider restricting access to the Ajax url encode.php file or disabling the link url parameter to minimize the risk of exploitation until a patch is available.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-40542

Affected Products

Opensis Classic

References · 5

• 🔥 https://github.com/OS4ED/openSIS-Classic/issues/189 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-40542 · Security Note
• https://osv.dev/vulnerability/CVE-2021-40542 · Vendor Advisory
• https://t.me/cibsecurity/30335 · Telegram Post
• https://t.me/cvenotify/22276 · Telegram Post