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 |
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https://systemoverlord.com/2017/12/18/cve-2017-17704-broken-cryptography-in-istar-ultra-ip-acm-by-software-house.html | Third Party Advisory |
Configurations
Configuration 1 (hide)
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History
No history.
Information
Published : 2017-12-31 02:29
Updated : 2024-02-28 16:04
NVD link : CVE-2017-17704
Mitre link : CVE-2017-17704
CVE.ORG link : CVE-2017-17704
JSON object : View
Products Affected
swhouse
- istar_ultra_firmware
- istar_ultra
CWE
CWE-330
Use of Insufficiently Random Values