CVE Vulnerability

CVE-2023-23611

LTI Consumer XBlock implements the consumer side of the LTI specification enabling integration of third-party LTI provider tools. Versions 7.0.0 and above, prior to 7.2.2, are vulnerable to Missing Authorization. Any LTI tool that is integrated with on the Open edX platform can post a grade back for any LTI XBlock so long as it knows or can guess the block location for that XBlock. An LTI tool submits scores to the edX platform for line items. The code that uploads that score to the LMS grade tables determines which XBlock to upload the grades for by reading the resource_link_id field of the associated line item. The LTI tool may submit any value for the resource_link_id field, allowing a malicious LTI tool to submit scores for any LTI XBlock on the platform. The impact is a loss of integrity for LTI XBlock grades. This issue is patched in 7.2.2. No workarounds exist.

5.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/openedx/xblock-lti-consumer/security/advisories/GHSA-7j9p-67mm-5g87 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:openedx:xblock-lti-consumer:*:*:*:*:*:*:*:*
Information

Published : 2023-01-26 09:18

Updated : 2023-02-07 01:08

NVD link : CVE-2023-23611

Mitre link : CVE-2023-23611

Products Affected
No products.
CWE
NVD-CWE-noinfo