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1. EXECUTIVE SUMMARY
- CVSS v4 9.3
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Schneider Electric
- Equipment: Sage series
- Vulnerabilities: Out-of-bounds Write, Improper Limitation of a Pathname to a Restricted Directory (‘Path Traversal’), Incorrect Default Permissions, Unchecked Return Value, Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’), Out-of-bounds Read
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to compromise the impacted device, leading to loss of data, loss of operation, or impacts to the performance of the device.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Schneider Electric reports that the following products are affected:
- Sage 1410: Versions C3414-500-S02K5_P8 and prior
- Sage 1430: Versions C3414-500-S02K5_P8 and prior
- Sage 1450: Versions C3414-500-S02K5_P8 and prior
- Sage 2400: Versions C3414-500-S02K5_P8 and prior
- Sage 4400: Versions C3414-500-S02K5_P8 and prior
- Sage 3030 Magnum: Versions C3414-500-S02K5_P8 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 OUT-OF-BOUNDS WRITE CWE-787
An out-of-bounds write vulnerability exists that could result in an authentication bypass when sending a malformed POST request and particular configuration parameters are set.
CVE-2024-37036 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-37036. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
3.2.2 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22
An improper limitation of a pathname to a restricted directory (‘path traversal’) vulnerability exists that could allow an authenticated user with access to the device’s web interface to corrupt files and impact device functionality when sending a crafted HTTP request.
CVE-2024-37037 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-37037. A base score of 7.2 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N).
3.2.3 INCORRECT DEFAULT PERMISSIONS CWE-276
An incorrect default permissions vulnerability exists that could allow an authenticated user with access to the device’s web interface to perform unauthorized file and firmware uploads when crafting custom web requests.
CVE-2024-37038 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-37038. A base score of 7.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
3.2.4 UNCHECKED RETURN VALUE CWE-252
An unchecked return value vulnerability exists that could cause denial of service of the device when an attacker sends a specially crafted HTTP request.
CVE-2024-37039 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
A CVSS v4 score has also been calculated for CVE-2024-37039. A base score of 8.2 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N).
3.2.5 BUFFER COPY WITHOUT CHECKING SIZE OF INPUT (‘CLASSIC BUFFER OVERFLOW’) CWE-120
A buffer copy without checking size of input (‘classic buffer overflow’) vulnerability exists that could allow a user with access to the device’s web interface to cause a fault on the device when sending a malformed HTTP request.
CVE-2024-37040 has been assigned to this vulnerability. A CVSS v3 base score of 5.4 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L).
A CVSS v4 score has also been calculated for CVE-2024-37040. A base score of 7.1 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L).
3.2.6 OUT-OF-BOUNDS READ CWE-125
An out-of-bounds read vulnerability exists that could cause denial of service of the device’s web interface when an attacker sends a specially crafted HTTP request.
CVE-2024-5560 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
A CVSS v4 score has also been calculated for CVE-2024-5560. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:L/SA:L).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Energy
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: France
3.4 RESEARCHER
Marlon Schumacher and Alex Armstrong from LLNL and Vishal Madipadga from SNL reported these vulnerabilities to Schneider Electric.
4. MITIGATIONS
Schneider Electric has identified the following specific workarounds and mitigations users can apply to reduce risk:
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Firmware version C3414-500-S02K5_P9 of SAGE RTU includes a fix for these vulnerabilities and is available for download.
For more information, see Schneider Electric security notification “SEVD-2024-163-05 SAGE RTU”.
Schneider Electric strongly recommend the following industry cybersecurity best practices.
- Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
- Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
- Place all controllers in locked cabinets and never leave them in the “Program” mode.
- Never connect programming software to any network other than the network intended for that device.
- Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.
- Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.
- Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
- When remote access is required, use secure methods, such as virtual private networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current version available. Also, understand that VPNs are only as secure as the connected devices.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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. 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 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 exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY
- April 17, 2025: Initial Republication of Schneider Electric Advisory SEVD-2024-163-05
