Joomla CMS up to 3.9.4 Media Manager folder path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in Joomla CMS up to 3.9.4. This issue affects some unknown processing of the component Media Manager. Executing a manipulation of the argument folder can lead to path traversal. The identification of this vulnerability is CVE-2019-10945. The attack may be launched remotely. Furthermore, there is an exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Joomla CMS up to 3.9.4 (Content Management System). It has been declared as critical. This vulnerability affects some unknown functionality of the component Media Manager. The manipulation of the argument folder 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:

An issue was discovered in Joomla! before 3.9.5. The Media Manager component does not properly sanitize the folder parameter, allowing attackers to act outside the media manager root directory.

The bug was discovered 03/13/2019. The weakness was shared 04/10/2019 (Website). The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2019-10945 since 04/08/2019. 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.

A public exploit has been developed in Python and been published 6 days after the advisory. 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 28 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13464 (Joomla! Core Directory Traversal Vulnerability in com_media [20190401]).

Upgrading to version 3.9.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (46710). The entry VDB-133325 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Joomla

Name

• CMS

Version

• 3.9.0
• 3.9.1
• 3.9.2
• 3.9.3
• 3.9.4

License

• open-source

Website

• Vendor: https://www.joomla.org/

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Once again VulDB remains the best source for vulnerability data.

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