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.
References
Link | Resource |
---|---|
https://systemoverlord.com/2017/12/18/cve-2017-17704-broken-cryptography-in-istar-ultra-ip-acm-by-software-house.html | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2017-12-31T02:00:00
Updated: 2017-12-31T01:57:01
Reserved: 2017-12-15T00:00:00
Link: CVE-2017-17704
JSON object: View
NVD Information
Status : Analyzed
Published: 2017-12-31T02:29:01.550
Modified: 2019-10-03T00:03:26.223
Link: CVE-2017-17704
JSON object: View
Redhat Information
No data.
CWE