BigTree CMS up to 4.2.18 unpack.php author_name cross site scripting ⚔ [Disputed]

Summaryinfo

A vulnerability was found in BigTree CMS up to 4.2.18 and classified as problematic. Affected is an unknown function of the file core\admin\modules\developer\extensions\install\unpack.php. Executing a manipulation of the argument author_name can lead to cross site scripting. This vulnerability is registered as CVE-2017-9441. It is possible to launch the attack remotely. No exploit is available. There are still doubts about whether this vulnerability truly exists.

Detailsinfo

A vulnerability classified as problematic was found in BigTree CMS up to 4.2.18 (Content Management System). This vulnerability affects an unknown code of the file core\admin\modules\developer\extensions\install\unpack.php. The manipulation of the argument author_name with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

Multiple cross-site scripting (XSS) vulnerabilities in BigTree CMS through 4.2.18 allow remote authenticated users to inject arbitrary web script or HTML by uploading a crafted package, triggering mishandling of the (1) title or (2) version or (3) author_name parameter in manifest.json. This issue exists in core\admin\modules\developer\extensions\install\unpack.php and core\admin\modules\developer\packages\install\unpack.php. NOTE: the vendor states "You must implicitly trust any package or extension you install as they all have the ability to write PHP files.

The weakness was published 06/05/2017 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2017-9441. The attack can be initiated remotely. A single authentication is needed for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The real existence of this vulnerability is still doubted at the moment. By approaching the search of inurl:core\admin\modules\developer\extensions\install\unpack.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.

Similar entries are available at VDB-101983, VDB-101982 and VDB-101981. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• BigTree

Name

• CMS

Version

• 4.2.0
• 4.2.1
• 4.2.2
• 4.2.3
• 4.2.4
• 4.2.5
• 4.2.6
• 4.2.7
• 4.2.8
• 4.2.9
• 4.2.10
• 4.2.11
• 4.2.12
• 4.2.13
• 4.2.14
• 4.2.15
• 4.2.16
• 4.2.17
• 4.2.18

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Once again VulDB remains the best source for vulnerability data.

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