CVE-2017-17704 | BDVDB-2026-94651 Detail

Description#

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.

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

References#

https://systemoverlord.com/2017/12/18/cve-2017-17704-broken-cryptography-in-istar-ultra-ip-acm-by-software-house.html

Exploit#

No public exploit known

History#

Version 12017-12-31Record published in the CVE List.
Version 22024-08-05Most recent update recorded in the CVE List.