A vulnerability, which was classified as problematic, was found in Technicolor TC7337 08.89.17.20.00. This affects some unknown functionality of the component SSID Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability (Persistent). CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

Persistent XSS through the SSID of nearby Wi-Fi devices on Technicolor TC7337 routers 08.89.17.20.00 allows an attacker to cause DNS Poisoning and steal credentials from the router.

The bug was discovered 08/02/2017. The weakness was shared 08/03/2017 (Website). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2017-11320 since 07/13/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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 1 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.

The vulnerability is also documented in the vulnerability database at Exploit-DB (42427).

Productinfo

Vendor

• Technicolor

Name

• TC7337

Version

• 08.89.17.20.00

License

• commercial

CPE 2.3info

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CPE 2.2info

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