ATutor up to 2.2.1 Course Extension path traversal

Summaryinfo

A vulnerability labeled as problematic has been found in ATutor up to 2.2.1. This vulnerability affects unknown code of the component Course Extension. Such manipulation leads to path traversal. This vulnerability is listed as CVE-2017-1000002. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in ATutor up to 2.2.1 (Learning Management Software) and classified as problematic. Affected by this issue is an unknown part of the component Course Extension. 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. CVE summarizes:

ATutor versions 2.2.1 and earlier are vulnerable to a directory traversal and file extension check bypass in the Course component resulting in code execution. ATutor versions 2.2.1 and earlier are vulnerable to a directory traversal vulnerability in the Course Icon component resulting in information disclosure.

The bug was discovered 07/16/2017. The weakness was presented 07/17/2017 by Henri Salo (Website). The advisory is shared for download at atutor.ca. This vulnerability is handled as CVE-2017-1000002 since 07/10/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 99599†). See VDB-103569 and VDB-103570 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Learning Management Software

Name

• ATutor

Version

• 2.2.0
• 2.2.1

License

• free

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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Entryinfo

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

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