9.3 High
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/SC:N/VI:H/SI:N/VA:H/SA:N
9.3 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
9.0%
Successful exploitation of these vulnerabilities could allow an attacker to bypass authentication and execute malicious commands with elevated permissions
The following products of LenelS2, a Carrier Brand, are affected:
LenelS2 NetBox access control and event monitoring system was discovered to contain hard-coded credentials in versions prior to and including 5.6.1, which allows an attacker to bypass authentication requirements.
CVE-2024-2420 has been assigned to this vulnerability. A CVSS v3.1 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).
A CVSS v4 score has also been calculated for CVE-2024-2420. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
LenelS2 NetBox access control and event monitoring system was discovered to contain an unauthenticated remote code execution in versions prior to and including 5.6.1, which allows an attacker to execute malicious commands with elevated permissions.
CVE-2024-2421 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-2421. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:H/SA:L).
LenelS2 NetBox access control and event monitoring system was discovered to contain an authenticated remote code execution in versions prior to and including 5.6.1, which allows an attacker to execute malicious commands.
CVE-2024-2422 has been assigned to this vulnerability. A CVSS v3.1 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).
A CVSS v4 score has also been calculated for CVE-2024-2422. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
Noam Moshe of Claroty Team82 reported these vulnerabilities to CISA.
These vulnerabilities have been mitigated in NetBox release 5.6.2. It is strongly recommended that users upgrade to NetBox release 5.6.2 by contacting their authorized installer.
Users should follow recommended deployment guidelines found in the NetBox hardening guide found in the NetBox built-in help menu.
For more information, see Carrier’s security bulletin for LenelS2.
CISA recommends users take defensive measures to minimize the risk of exploitation of this these vulnerabilities, such as:
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.
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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2420
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2420
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2421
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2421
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2422
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-2422
cwe.mitre.org/data/definitions/259.html
cwe.mitre.org/data/definitions/78.html
cwe.mitre.org/data/definitions/88.html
github.com/cisagov/CSAF
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/resources-tools/resources/ics-recommended-practices
www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/ncas/tips/ST04-014
www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf
www.corporate.carrier.com/product-security/advisories-resources/
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