PT-2022-9533 · WordPress · Litespeed Cache

Emil Kylander · Published 2022-01-03 · Updated 2022-01-08 · CVE-2021-24963

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions LiteSpeed Cache WordPress plugin versions prior to 4.4.4

Description The issue is related to a Reflected Cross-Site Scripting problem. It occurs because the qc res parameter is not properly escaped before being outputted back in the JavaScript code of an admin page. This allows for malicious scripts to be injected.

Recommendations For versions prior to 4.4.4, update to version 4.4.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the admin page where the qc res parameter is used until a patch is applied. Avoid using the qc res parameter in the affected JavaScript code until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24963

Affected Products

Litespeed Cache

References · 6

• 🔥 https://wpscan.com/vulnerability/7f8b4275-7586-4e04-afd9-d12bdab6ba9b · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24963 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24963 · Vendor Advisory
• https://plugins.trac.wordpress.org/changeset/2634373 · Patch
• https://t.me/cvenotify/25129 · Telegram Post
• https://t.me/cibsecurity/34862 · Telegram Post