CVE-2017-17704: High severity Swhouse Istar Ultra Firmware vulnerability
A door-unlocking issue was discovered on Software House iStar Ultra devices through 6.5.2.20569 when used in conjunction with the IP-ACM Ethernet Door Module. The communications between the IP-ACM and the iStar Ultra is encrypted using a fixed AES key and IV. Each message is encrypted in CBC mode and restarts with the fixed IV, leading to replay attacks of entire messages. There is no authentication of messages beyond the use of the fixed AES key, so message forgery is also possible.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2017-17704?
CVE-2017-17704 has a medium severity rating due to the potential for unauthorized access to door-unlocking functionality.
How do I fix CVE-2017-17704?
To fix CVE-2017-17704, upgrade the Software House iStar Ultra firmware to a version higher than 6.5.2.20569.
What devices are affected by CVE-2017-17704?
CVE-2017-17704 affects Software House iStar Ultra devices running firmware version 6.5.2.20569 and earlier when used with the IP-ACM Ethernet Door Module.
What type of vulnerability is CVE-2017-17704?
CVE-2017-17704 is a cryptographic vulnerability that involves the use of a fixed AES key and IV in encrypted communications.
Can CVE-2017-17704 lead to security breaches?
Yes, CVE-2017-17704 can lead to security breaches as it may allow unauthorized individuals to unlock doors controlled by the affected devices.