CVE-2023-23611

2023-01-2621:18:14

CWE-862

GitHub_M

web.nvd.nist.gov

100

cve-2023-23611

lti consumer xblock

missing authorization

open edx platform

lti tool

integration

security vulnerability

grade submission

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.5

Confidence

High

EPSS

0.001

Percentile

23.5%

JSON

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.

Affected configurations

Nvd

Vulners

Node

openedxxblock-lti-consumerRange7.0.0–7.2.2

VendorProductVersionCPE
openedxxblock-lti-consumer*cpe:2.3:a:openedx:xblock-lti-consumer:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
openedx	xblock-lti-consumer	*	cpe:2.3:a:openedx:xblock-lti-consumer::::::::

CNA Affected

[
  {
    "vendor": "openedx",
    "product": "xblock-lti-consumer",
    "versions": [
      {
        "version": ">= 7.0.0, < 7.2.2",
        "status": "affected"
      }
    ]
  }
]