Risk Category: High Document ID: SCYD-05-10032023
Document Status: Final
CVSS v3.1 Score: 9.1
cvss:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (9.1 – UPD 1)
cvss:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (7.5 – UDP 2)
cvss:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H (8.1 – DHCP)
CVE ID: CVE-2017-12718
CWE: CWE-119, CWE-120
Distech Controls SOLSTYCE DALI Gateway devices are impacted by multiple vulnerabilities within the TCP/IP Stack and DHCP Client utilized by impacted devices. An unauthenticated, remote attacker who can send unsolicited UDP packets to the BACnet or management interfaces or inject themselves into the network path of impacted devices and respond to a DHCP request from an impacted device could trigger a buffer overflow condition, allowing the attacker to execute arbitrary code with elevated privileges or trigger a denial-of-service condition.
The first UDP vulnerability is due to a failure within the MQX TCP/IP Stack when processing malicious UDP Frames sent to an impacted device. The impacted component is part of the underlying MQX operating system utilized by SOLSTYCE devices.
The second UPD vulnerability is due to a failure to properly handle a high rate of UDP packets destined for an impacted device. The impacted component is part of the underlying MQX operating system utilized by SOLSTYCE devices.
The DHCP vulnerability is due to a failure by the MQX RTOS DHCP Client to properly handle malicious DHCP options when included as part of a valid DHCP response. The impacted component is part of the underlying MQX operating system utilized by SOLSTYCE devices.
Updated software and mitigations are available to resolve this issue.
Distech Controls SOLSTYCE Gateway SCY-1DALI or SCY-2DALI devices running software prior to version 18.104.22.168 are impacted.
Acuity nLight nPS 80 DALI interface modules are not affected.
Update software versions to 22.214.171.124 or later
Administrators may mitigate the DHCP vulnerability by disabling DHCP functionality and assigning a Static IP Address to impacted devices.
Version 126.96.36.199 or later
The issues were identified by the Acuity partner that provides the SOLSTYCE DALI Gateway devices.
Acuity Brands knows of no exploitation of these vulnerabilities.
10/3/2023 – Initial Release
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