CVE-2017-13718 Auth bypass in n/a
Attackers can brute force the router PIN via HTTP API to change Wi-Fi settings, port forward, and steal sensitive device information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-13718?
CVE-2017-13718 is a high-severity authentication bypass vulnerability in n/a, published on 10 Jun 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The HTTP API supported by Starry Station (aka Starry Router) allows brute forcing the PIN setup by the user on the device, and this allows an attacker to change the Wi-Fi settings and PIN, as well as port forward and expose any internal device's port to the Internet. It was identified that the device uses custom Python code called "rodman" that allows the mobile appication to interact with the device. The APIs that are a part of this rodman Python file allow the mobile application to interact with the device using a secret, which is a uuid4 based session identifier generated by the device the first time it is set up. However, in some cases, these APIs can also use a security code. This security code is nothing but the PIN number set by the user to interact with the device when using the touch interface on the router. This allows an attacker on the Internet to interact with the router's HTTP interface when a user navigates to the attacker's website, and brute force the credentials. Also, since the device's server sets the Access-Control-Allow-Origin header to "*", an attacker can easily interact with the JSON payload returned by the device and steal sensitive information about the device.
Weakness: CWE-254
Which versions are affected by CVE-2017-13718?
It affects 1 product.
Products include Starry S00111 Firmware.
How do I fix CVE-2017-13718?
No fix has been published for CVE-2017-13718 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-13718 being exploited?
There is no known exploitation of CVE-2017-13718 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cpcg-x4f2-x9fr.