PT-2023-12939 · Mybb · External Redirect Warning Plugin

Published 2023-04-16 · Updated 2023-04-24 · CVE-2022-28353

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 External Redirect Warning Plugin version 1.3 for MyBB

Description The issue concerns a problem where the redirect URL, also known as external.php?url=, is susceptible to XSS. This means an attacker could potentially inject malicious scripts into the website, affecting users who interact with the vulnerable redirect URL.

Recommendations For External Redirect Warning Plugin version 1.3, consider disabling the external.php endpoint until a patch is available to prevent potential XSS attacks. Restrict access to the external.php?url= parameter 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-2022-28353

Affected Products

External Redirect Warning Plugin

References · 7

• 🔥 http://packetstormsecurity.com/files/171403/MyBB-External-Redirect-Warning-1.3-Cross-Site-Scripting.html · Exploit
• https://community.mybb.com/mods.php?action=view&pid=493 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-28353 · Security Note
• https://osv.dev/vulnerability/CVE-2022-28353 · Vendor Advisory
• https://t.me/cvenotify/48985 · Telegram Post
• https://t.me/cvenotify/48368 · Telegram Post
• https://t.me/cibsecurity/62253 · Telegram Post