CVE-2017-17910 Weak cryptography in n/a
Attackers can derive static encryption keys to clone radio signals and control garage or gate operators via Software Defined Radio.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-17910?
CVE-2017-17910 is a medium-severity vulnerability in n/a, published on 29 Dec 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
On Hoermann BiSecur devices before 2018, a vulnerability can be exploited by recording a single radio transmission. An attacker can intercept an arbitrary radio frame exchanged between a BiSecur transmitter and a receiver to obtain the encrypted packet and the 32-bit serial number. The interception of the one-time pairing process is specifically not required. Due to use of AES-128 with an initial static random value and static data vector (all of this static information is the same across different customers' installations), the attacker can easily derive the utilized encryption key and decrypt the intercepted packet. The key can be verified by decrypting the intercepted packet and checking for known plaintext. Subsequently, an attacker can create arbitrary radio frames with the correct encryption key to control BiSecur garage and entrance gate operators and possibly other BiSecur systems as well ("wireless cloning"). To conduct the attack, a low cost Software Defined Radio (SDR) is sufficient. This affects Hoermann Hand Transmitter HS5-868-BS, HSE1-868-BS, and HSE2-868-BS devices.
Weakness: CWE-330
Which versions are affected by CVE-2017-17910?
It affects 3 products.
Products include Hoermann Hs5-868-Bs Firmware, Hoermann Hse1-868-Bs Firmware, Hoermann Hse2-868-Bs Firmware.
How do I fix CVE-2017-17910?
No fix has been published for CVE-2017-17910 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-17910 being exploited?
There is no known exploitation of CVE-2017-17910 in the wild and no public exploit code.
Sources
Also known as GHSA-ph87-72gp-hxww.