Delta Electronics CNCSoft-G2

Release date
10 October 2024
Alert rating
LOW

Description

View CSAF

Audience

Cyber security professionalsLarge organisationsGovernment

Current update

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1. EXECUTIVE SUMMARY

  • CVSS v4 8.4
  • ATTENTION: low attack complexity
  • Vendor: Delta Electronics
  • Equipment: CNCSoft-G2
  • Vulnerabilities: Stack-based Buffer Overflow, Out-of-bounds Write, Heap-Based Buffer Overflow, Out-of-bounds Read, Use of Uninitialized Variable

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to execute code remotely.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Delta Electronics CNCSoft-G2, a Human-Machine Interface (HMI) software, are affected:

  • CNCSoft-G2: Version 2.1.0.10

3.2 Vulnerability Overview

3.2.1 Stack-based Buffer Overflow CWE-121

Delta Electronics CNCSoft-G2 lacks proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can manipulate an insider to visit a malicious page or file to leverage this vulnerability to execute code in the context of the current process.

CVE-2024-47962 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-47962. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.2 Out-of-bounds Write CWE-787

Delta Electronics CNCSoft-G2 lacks proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can manipulate users to visit a malicious page or file to leverage this vulnerability to execute code in the context of the current process.

CVE-2024-47963 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-47963. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.3 Heap-Based Buffer Overflow CWE-122

Delta Electronics CNCSoft-G2 lacks proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can manipulate users to visit a malicious page or file to leverage this vulnerability to execute code in the context of the current process.

CVE-2024-47964 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-47964. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.4 Out-of-bounds Read CWE-125

Delta Electronics CNCSoft-G2 lacks proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can manipulate users to visit a malicious page or file to leverage this vulnerability to execute code in the context of the current process.

CVE-2024-47965 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-47965. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.2.5 Use of Uninitialized Variable CWE-457

Delta Electronics CNCSoft-G2 lacks proper initialization of memory prior to accessing it. An attacker can manipulate users to visit a malicious page or file to leverage this vulnerability to execute code in the context of the current process.

CVE-2024-47966 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-47966. A base score of 8.4 has been calculated; the CVSS vector string is (CVSS4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

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

3.4 RESEARCHER

Bobby Gould, Fritz Sands, and Natnael Samson working with Trend Micro Zero Day Initiative reported these vulnerabilities to CISA.

4. MITIGATIONS

Delta Electronics recommends users update to CNCSoft-G2 v2.1.0.16 or later.

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

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 on 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.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

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.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

  • October 10, 2024: Initial Publication

This product is provided subject to this Notification and this Privacy & Use policy.

Vendor

  • Delta Electronics
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