Jaws CMS 1.1.1 File Upload Filter privileges management

Summaryinfo

A vulnerability identified as critical has been detected in Jaws CMS 1.1.1. This affects an unknown part of the component File Upload Filter. Performing a manipulation with the input example.pht results in privileges management. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Jaws CMS 1.1.1 (Content Management System). This affects some unknown functionality of the component File Upload Filter. The manipulation with the input value example.pht leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 11/17/2016 by Tim Coen with Curesec Research Team as Jaws 1.1.1: Code Execution as confirmed mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The vendor was not involved in the public release. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is required for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

The file manager forbids the uploading of most PHP and htaccess files by checking the extension of uploaded files and renaming files when required. However, the check can be bypassed by an attacker as the file extension .pht - which is treated as PHP file by default Apache installations - is not filtered.

A public exploit has been developed by Tim Coen and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 192 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Further details are available at curesec.com. Entries connected to this vulnerability are available at VDB-93712, VDB-93713, VDB-93714 and VDB-93707. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Jaws

Name

• CMS

Version

• 1.1.1

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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