CVE-2017-17704

N/A
Published: December 31, 2017 at 02:00 AM UTC
Updated: June 17, 2026 at 01:11 AM UTC
2 products affected across 1 vendorIstar Ultra FirmwareIstar Ultra

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Severity
N/A
Exploit prediction
EPSS 1.0%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 6.5.2.20569
swhouse-istar-ultra (same device)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Confidentiality
NONE
Integrity
PARTIAL
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-330

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