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CVE-2023-23611— xblock-lti-consumer contain Missing Authorization in Grade Pass Back Implementation

Quick assessment

Affected
openedx xblock-lti-consumer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

EDX Open edX是美国EDX公司的一套在线学习管理系统。 Open edX XBlock 7.0.0版本至7.2.2之前版本存在安全漏洞，该漏洞源于缺少授权管理。

CVSS 5.4 · Medium EPSS 0.38% · P30
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I. Basic Information for CVE-2023-23611

Vulnerability Information
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Vulnerability Title
xblock-lti-consumer contain Missing Authorization in Grade Pass Back Implementation
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Open edX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EDX Open edX是美国EDX公司的一套在线学习管理系统。 Open edX XBlock 7.0.0版本至7.2.2之前版本存在安全漏洞，该漏洞源于缺少授权管理。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openedx xblock-lti-consumer >= 7.0.0, < 7.2.2 -

II. Public POCs for CVE-2023-23611

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III. Intelligence Information for CVE-2023-23611

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Vendor Advisories for CVE-2023-23611 (1)

IV. Related Vulnerabilities

Same vendor: openedx
Same weakness: CWE-862

V. Comments for CVE-2023-23611

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