9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
49.3%
CISA is aware of a public report, known as βOT:ICEFALLβ that details vulnerabilities found in multiple operational technology (OT) vendors. CISA is issuing this advisory to provide notice of the reported vulnerabilities and identify baseline mitigations for reducing risks to these and other cybersecurity attacks.
Successful exploitation of these vulnerabilities could result in message manipulation, exposure of the attack surface of the MDLC protocol parser, memory corruption, and exposure of sensitive information.
The following versions of the Motorola Solutions MDLC protocol parser are affected:
The MDLC protocol has a legacy encryption mode that encrypts traffic using the tiny encryption algorithm (TEA) block-cipher in ECB mode, which offers no message integrity and reduced confidentiality. An attacker could craft messages with ciphertext blocks inserted at certain positions resulting in known plaintext at a given offset. This could either lead to message manipulation or exposure of the attack surface of the MDLC protocol parser to memory corruption attacks.
CVE-2022-30273 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N).
The affected product utilizes an MDLC driver that has a password stored in plaintext in the wmdlcdrv.ini driver configuration file.
CVE-2022-30275 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).
Daniel dos Santos and Jos Wetzels from Forescout Technologies reported these vulnerabilities to CISA.
Motorola Solutions recommends the following:
For CVE-2022-30273:
For CVE-2022-30275:
Motorola Solutions also recommends ACE3600 and MC-EDGE users move to the MDLC protocol, which replaces the MDLC legacy protocol and supports AES 256-bit encryption.
For user guide and procedural information mentioned within this report, use the Contact Us form and select βOtherβ for Product Interest and request the manual for IoT products.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should:
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-12-146-01BβTargeted 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 exploits specifically target this vulnerability. This vulnerability has a high attack complexity.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30273
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30275
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/256.html
cwe.mitre.org/data/definitions/327.html
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/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
49.3%