Delta Electronics InfraSuite Device Master

1. EXECUTIVE SUMMARY

• CVSS v3 9.8 *ATTENTION: Exploitable remotely/low attack complexity
• Vendor: Delta Electronics
• Equipment: InfraSuite Device Master
• Vulnerabilities: Deserialization of Untrusted Data, Improper Access Control, Exposed Dangerous Method or Function, Path Traversal, Improper Authentication, Command Injection, Incorrect Permission Assignment for Critical Resource, Missing Authentication for Critical Function

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an unauthenticated attacker to obtain access to files and credentials, escalate privileges, and remotely execute arbitrary code.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of InfraSuite Device Master, a real-time device monitoring software, are affected:

• Versions prior to 1.0.5

3.2 VULNERABILITY OVERVIEW

3.2.1 DESERIALIZATION OF UNTRUSTED DATA CWE-502

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 contain a vulnerability in which the Device-status service listens on port 10100/ UDP by default. The service accepts the unverified UDP packets and deserializes the content, which could allow an unauthenticated attacker to remotely execute arbitrary code.

CVE-2023-1133 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.2 DESERIALIZATION OF UNTRUSTED DATA CWE-502

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 are affected by a deserialization vulnerability targeting the Device-gateway service, which could allow deserialization of requests prior to authentication, resulting in remote code execution.

CVE-2023-1139 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.3 DESERIALIZATION OF UNTRUSTED DATA CWE-502

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 are affected by a deserialization vulnerability targeting the Device-DataCollect service, which could allow deserialization of requests prior to authentication, resulting in remote code execution.

CVE-2023-1145 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.4 IMPROPER ACCESS CONTROL CWE-284

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 contain an improper access control vulnerability, which could allow an attacker to retrieve Gateway configuration files to obtain plaintext credentials.

CVE-2023-1138 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.2.5 IMPROPER ACCESS CONTROL CWE-284

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 contains an improper access control vulnerability in which an attacker can use the Device-Gateway service and bypass authorization, which could result in privilege escalation.

CVE-2023-1144 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.6 IMPROPER ACCESS CONTROL CWE-284

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 contain a vulnerability in which a low-level user could extract files and plaintext credentials of administrator users, resulting in privilege escalation.

CVE-2023-1137 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

3.2.7 EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749

In Delta Electronics InfraSuite Device Master versions prior to 1.0.5, an attacker could use Lua scripts, which could allow an attacker to remotely execute arbitrary code.

CVE-2023-1143 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.8 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 are affected by a path traversal vulnerability, which could allow an attacker to read local files, disclose plaintext credentials, and escalate privileges.

CVE-2023-1134 has been assigned to this vulnerability. A CVSS v3 base score of 7.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H).

3.2.9 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22

In Delta Electronics InfraSuite Device Master versions prior to 1.0.5, an attacker could use URL decoding to retrieve system files, credentials, and bypass authentication resulting in privilege escalation.

CVE-2023-1142 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.2.10 IMPROPER AUTHENTICATION CWE-287

In Delta Electronics InfraSuite Device Master versions prior to 1.0.5, an unauthenticated attacker could generate a valid token, which would lead to authentication bypass.

CVE-2023-1136 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.11 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND (‘COMMAND INJECTION’) CWE-77

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 contain a command injection vulnerability that could allow an attacker to inject arbitrary commands, which could result in remote code execution.

CVE-2023-1141 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.12 INCORRECT PERMISSION ASSIGNMENT FOR CRITICAL RESOURCE CWE-732

In Delta Electronics InfraSuite Device Master versions prior to 1.0.5, an attacker could set incorrect directory permissions, which could result in local privilege escalation.

CVE-2023-1135 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.13 MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306

Delta Electronics InfraSuite Device Master versions prior to 1.0.5 contain a vulnerability that could allow an attacker to achieve unauthenticated remote code execution in the context of an administrator.

CVE-2023-1140 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Energy
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Taiwan

3.4 RESEARCHER

Piotr Bazydlo (@chudypd) of Trend Micro and Anonymous working with Trend Micro’s Zero Day Initiative reported these vulnerabilities to CISA.

4. MITIGATIONS

Delta Electronics recommends users uninstall old versions of InfraSuite Device Master and reinstall the updated version 1.0.5 using the installer.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:

• Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
• Locate control system networks and remote devices behind firewalls and isolate them from business networks.
• When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage at cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

• Do not click web links or open attachments in unsolicited email messages.
• Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
• Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploits specifically target these vulnerabilities.