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CVE-2023-4220

Date: November 28, 2023

Unrestricted file upload in big file upload functionality in "/main/inc/lib/javascript/bigupload/inc/bigUpload.php" in Chamilo LMS <= v1.11.24 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via uploading of web shell.

Language: PHP

Severity Score

Related Resources (5)

https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-130-2023-09-04-Critical-impact-High-risk-Unauthenticated-users-may-gain-XSS-and-unauthenticated-RCE-CVE-2023-4220
https://github.com/chamilo/chamilo-lms/commit/3b487a55076fb06f96809b790a35dcdd42f8ec49
https://nvd.nist.gov/vuln/detail/CVE-2023-4220
https://starlabs.sg/advisories/23/23-4220
https://www.mend.io/vulnerability-database/CVE-2023-4220

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Unrestricted Upload of File with Dangerous Type

CWE-434

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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