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Vulnerability of Technicolor SpeedTouch: internal port scanning via UPnP

Synthesis of the vulnerability 

An internet attacker can use the UPnP feature of the Technicolor SpeedTouch modem, in order to alter its configuration.
Impacted products: SpeedTouch.
Severity of this bulletin: 2/4.
Number of vulnerabilities in this bulletin: 8.
Creation date: 25/11/2011.
Références of this threat: BID-50810, CVE-2011-4499, CVE-2011-4500, CVE-2011-4501, CVE-2011-4502, CVE-2011-4503, CVE-2011-4504, CVE-2011-4505, CVE-2011-4506, VIGILANCE-VUL-11181, VU#357851.

Description of the vulnerability 

The UPnP (Universal Plug and Play) technology is used to automatically configure a device, with no authentication.

Technicolor SpeedTouch modems use UPnP IGD (Internet Gateway Device), so a computer on the LAN can for example configure:
 - AddPortMapping : add a port to translate
 - DeletePortMapping : delete a port
 - etc.

However, some modems accept UPnP IGD queries coming from their WAN interface (internet).

An internet attacker can therefore use the UPnP feature of the Technicolor SpeedTouch modem, in order to alter its configuration. He can thus for example scan the internal network.
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This computer threat announce impacts software or systems such as SpeedTouch.

Our Vigil@nce team determined that the severity of this computer vulnerability is medium.

The trust level is of type confirmed by a trusted third party, with an origin of internet client.

This bulletin is about 8 vulnerabilities.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this cybersecurity alert.

Solutions for this threat 

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