Chamilo LMS up to 1.11.20 File Upload additional_webservices.php path traversal

Summaryinfo

A vulnerability described as critical has been identified in Chamilo LMS up to 1.11.20. This issue affects some unknown processing of the file /main/webservices/additional_webservices.php of the component File Upload. Such manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2023-3533. The attack can be launched remotely. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Chamilo LMS up to 1.11.20 (Content Management System) and classified as critical. Affected by this issue is an unknown code block of the file /main/webservices/additional_webservices.php of the component File Upload. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Path traversal in file upload functionality in `/main/webservices/additional_webservices.php` in Chamilo LMS <= v1.11.20 allows unauthenticated attackers to perform stored cross-site scripting attacks and obtain remote code execution via arbitrary file write.

The weakness was disclosed 11/28/2023. The advisory is shared for download at starlabs.sg. This vulnerability is handled as CVE-2023-3533 since 07/07/2023. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

By approaching the search of inurl:main/webservices/additional_webservices.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch 37be9ce7243a30259047dd4517c48ff8b21d657a is able to eliminate this problem. The bugfix is ready for download at github.com.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Content Management System

Vendor

• Chamilo

Name

• LMS

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3
• 1.11.4
• 1.11.5
• 1.11.6
• 1.11.7
• 1.11.8
• 1.11.9
• 1.11.10
• 1.11.11
• 1.11.12
• 1.11.13
• 1.11.14
• 1.11.15
• 1.11.16
• 1.11.17
• 1.11.18
• 1.11.19
• 1.11.20

License

• open-source

CPE 2.3info

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CPE 2.2info

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