PT-2021-3536 · Chamilo · Chamilo

Andrejspuler · Published 2021-05-13 · Updated 2022-05-16 · CVE-2021-32925

Positive Technologies (AI Summary)

CVSS v2.0

9.4

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:C

Name of the Vulnerable Software and Affected Versions Chamilo versions 1.11.x

Description The issue is related to the admin/user import.php file in Chamilo, which reads XML data without properly disabling the ability to load external entities. This can lead to an XXE (XML External Entity) attack, potentially allowing a remote attacker to disclose protected information.

Recommendations For Chamilo versions 1.11.x, consider disabling the admin/user import.php file or restricting its access to minimize the risk of exploitation until a patch is available. As a temporary workaround, avoid using the admin/user import.php file for XML data import until the issue is resolved.

Exploit

Fix

XXE

Information Disclosure

Weakness Enumeration

CWE-611

CWE-200

Related Identifiers

BDU:2021-03587

CVE-2021-32925

Affected Products

Chamilo

References · 9

• 🔥 https://github.com/andrejspuler/writeups/blob/main/chamilo-lms/README.md#authenticated-rcelfi-in-user-import-via-xml-external-entity---cve-2021-32925 · Exploit
• https://github.com/chamilo/chamilo-lms/commit/e71437c8de809044ba3ae1b181d70857c050a3e9 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-32925 · Security Note
• https://bdu.fstec.ru/vul/2021-03587 · Security Note
• https://osv.dev/vulnerability/CVE-2021-32925 · Vendor Advisory
• https://t.me/cvenotify/14843 · Telegram Post
• https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-58-2021-05-12-High-impact-very-low-risk-LFIRCE-vulnerability-in-users-import · Note
• https://php.net/manual/en/function.libxml-disable-entity-loader.php · Note
• https://vuldb.com/?id.175035 · Note