PT-2021-22493 · Open Edx · Open Edx

Published 2021-08-17 · Updated 2021-08-25 · CVE-2021-39248

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Open edX versions through Lilac.1

Description The issue allows for XSS in the common/static/common/js/discussion/utils.js file via crafted LaTeX content within a discussion. This occurs due to improper handling of user-inputted LaTeX content, which can lead to the execution of malicious scripts.

Recommendations For Open edX versions through Lilac.1, consider disabling the LaTeX rendering functionality in discussions until a patch is available to prevent potential XSS attacks. Restrict access to the discussion feature to minimize the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-39248

Affected Products

Open Edx

References · 3

• https://github.com/edx/edx-platform/pull/28379 · Patch
• https://osv.dev/vulnerability/CVE-2021-39248 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39248 · Security Note