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.
Schneider Electric reports that the following products are affected:
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).
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).
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).
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).
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).
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).
Marlon Schumacher and Alex Armstrong from LLNL and Vishal Madipadga from SNL reported these vulnerabilities to Schneider Electric.
Schneider Electric has identified the following specific workarounds and mitigations users can apply to reduce risk:
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.
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:
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.