Tecrail Responsive FileManager 9.13.4 execute.php delete_folder paths[0] path traversal

Summaryinfo

A vulnerability identified as critical has been detected in Tecrail Responsive FileManager 9.13.4. Affected by this vulnerability is the function delete_folder of the file execute.php. Performing a manipulation of the argument paths[0] results in path traversal. This vulnerability is known as CVE-2018-20789. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Tecrail Responsive FileManager 9.13.4. This affects the function delete_folder of the file execute.php. The manipulation of the argument paths[0] with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity, and availability. The summary by CVE is:

tecrail Responsive FileManager 9.13.4 allows remote attackers to delete an arbitrary directory as a consequence of a paths[0] path traversal mitigation bypass through the delete_folder action in execute.php.

The bug was discovered 12/12/2018. The weakness was published 02/25/2019 as EDB-ID 45987 as not defined exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2018-20789 since 02/25/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

After immediately, there has been an exploit disclosed. The exploit is shared for download 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 75 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:execute.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 vulnerability is also documented in the vulnerability database at Exploit-DB (45987). Similar entries are available at VDB-131176, VDB-131177, VDB-131178 and VDB-131179. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Tecrail

Name

• Responsive FileManager

Version

• 9.13.4

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Be aware that VulDB is the high quality source for vulnerability data.

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