Skip to content
Patch Next
Sign inAdd to your agent

← Public intelligence

PyPI package

lti-consumer-xblock

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Low, CVSS 2.1PyPIAmendedPublished

    LTI 1.3 Grade Pass Back Implementation has Missing Authorization Vulnerability

    CVE-2023-23611 · GHSA-7j9p-67mm-5g87

    Affected
    • PyPI lti-consumer-xblock >= 7.0.0, < 7.2.2
    Fixed in
    7.2.2· Vendor fix available
    Issue
    Problem TL;DR: 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. In LTI 1.3, LTI tools can "pass back" scores that learners earn while using LTI tools to the edX platform. The edX platform then stores those LTI scores in a separate table. If the right conditions are met, these scores are then persisted to the LMS grades tables. LTI tools can create what are called "line items" on the edX platform. A line item can be thought of as a column in a grade book; it stores results for a specific activity (i.e. XBlock) for a specific set of users (i.e. users in the course using the XBlock). A line item has an optional resourcelinkid field, which is basically the XBlock location. An LTI tool can supply any value for this field. 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…

    Recommended action: Upgrade to 7.2.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →