Tutor LMS <= 1.9.1 - Authenticated Stored Cross-Site Scripting

2021-06-28 00:00

Phu Tran

Strategic Overview

Status

Patched in 1.9.2

Affected PluginTutor LMS – eLearning and online course solution

Affected Version<= 1.9.1

CVSS5.5Medium

CVECVE-2021-24455

View all Tutor LMS – eLearning and online course solution vulnerabilities

Vulnerability Overview

The Tutor LMS – eLearning and online course solution WordPress plugin before 1.9.2 did not escape the Summary field of Announcements (when outputting it in an attribute), which can be created by users as low as Tutor Instructor. This lead to a Stored Cross-Site Scripting issue, which is triggered when viewing the Announcements list, and could result in privilege escalation when viewed by an admin.

Technical Analysis

REMEDIATION: Update to version 1.9.2, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24455 https://www.wordfence.com/threat-intel/vulnerabilities/id/65526517-aec5-454b-94c0-973359d840e1

CVSS Vector

5.5

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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