FusionPBX up to 4.5.7 resources\download.php f path traversal

Summaryinfo

A vulnerability categorized as problematic has been discovered in FusionPBX up to 4.5.7. Impacted is an unknown function of the file resources\download.php. Such manipulation of the argument f as part of Variable leads to path traversal. This vulnerability is traded as CVE-2019-16986. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in FusionPBX up to 4.5.7. Affected by this issue is an unknown functionality of the file resources\download.php. The manipulation of the argument f as part of a Variable 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:

In FusionPBX up to v4.5.7, the file resources\download.php uses an unsanitized "f" variable coming from the URL, which takes any pathname and allows a download of it. (resources\secure_download.php is also affected.)

The weakness was shared 10/21/2019. This vulnerability is handled as CVE-2019-16986 since 09/29/2019. The exploitation is known to be easy. The attack may be launched remotely. The successful exploitation needs a simple authentication. 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:resources\download.php it is possible to find vulnerable targets with Google Hacking.

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

The entries VDB-143988, VDB-143987, VDB-143986 and VDB-143985 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• FusionPBX

Version

• 4.5.0
• 4.5.1
• 4.5.2
• 4.5.3
• 4.5.4
• 4.5.5
• 4.5.6
• 4.5.7

License

• free

Website

• Product: https://github.com/fusionpbx/fusionpbx/

CPE 2.3info

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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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