Appnitro Machform up to 4.2.2 download.php q path traversal

Summaryinfo

A vulnerability was found in Appnitro Machform up to 4.2.2. It has been declared as critical. This vulnerability affects unknown code of the file download.php. Executing a manipulation of the argument q as part of Parameter can lead to path traversal. The identification of this vulnerability is CVE-2018-6409. The attack may be launched remotely. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Appnitro Machform up to 4.2.2 and classified as critical. This vulnerability affects some unknown processing of the file download.php. The manipulation of the argument q as part of a Parameter leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

An issue was discovered in Appnitro MachForm before 4.2.3. The module in charge of serving stored files gets the path from the database. Modifying the name of the file to serve on the corresponding ap_form table leads to a path traversal vulnerability via the download.php q parameter.

The bug was discovered 02/17/2015. The weakness was shared 05/26/2018 (Website). The advisory is shared for download at metalamin.github.io. This vulnerability was named CVE-2018-6409 since 01/30/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1006.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1194 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:download.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.2.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44804). The entries VDB-118265 and VDB-118266 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Appnitro

Name

• Machform

Version

• 4.2.0
• 4.2.1
• 4.2.2

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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