CVE-2017-17704
A door-unlocking issue was discovered on Software House iStar Ultra devices through 6.5.2.20569...
CVE-2017-17704 is a high vulnerability (CVSS 7.4) in Swhouse Istar Ultra Firmware, published December 31, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.99%, the 63rd percentile. No source names a fixed version.
- Severity
- 7.4 HighCVSS 3.0, NVD
- Exploit chance
- 0.99%EPSS, 63rd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
What each source reports
NVD Score used
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.
- Record
CVE-2017-17704- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:P - Weakness
- CWE-330
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2017-17704- Updated
- 2026-11-02
EUVDEUVD-2017-8861No score
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.
- Record
EUVD-2017-8861- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2p4x-3pfm-qg42
A door-unlocking issue was discovered on Software House iStar Ultra devices through 6.5.2.20569...
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.
- Record
GHSA-2p4x-3pfm-qg42- CVSS 3.0
- 7.4 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-330
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.