Responsive Filemanager up to 9.13.2 /filemanager/upload.php url path traversal

Summaryinfo

A vulnerability described as critical has been identified in Responsive Filemanager up to 9.13.2. This vulnerability affects unknown code of the file /filemanager/upload.php. Executing a manipulation of the argument url can lead to path traversal. This vulnerability is handled as CVE-2018-15495. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Responsive Filemanager up to 9.13.2 and classified as critical. This vulnerability affects an unknown code block of the file /filemanager/upload.php. The manipulation of the argument url with an unknown input 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, integrity, and availability. CVE summarizes:

/filemanager/upload.php in Responsive FileManager before 9.13.3 allows Directory Traversal and SSRF because the url parameter is used directly in a curl_exec call, as demonstrated by a file:///etc/passwd value.

The bug was discovered 08/09/2018. The weakness was released 08/18/2018 (Website). The advisory is shared for download at seclists.org. This vulnerability was named CVE-2018-15495 since 08/17/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is 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 8 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:filemanager/upload.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 9.13.3 eliminates this vulnerability.

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Productinfo

Vendor

• Responsive

Name

• Filemanager

Version

• 9.13.0
• 9.13.1
• 9.13.2

CPE 2.3info

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CPE 2.2info

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