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
EPSS
Percentile
51.2%
CISA is aware of a public report, known as “OT:ICEFALL” 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 allow an attacker to manipulate the RTU configuration, cause a denial-of-service condition, or achieve remote code execution.
The following versions of ACE1000, a remote terminal unit, are affected:
The affected product ships with a hardcoded SSH private key and initialization scripts (such as /etc/init.d/sshd_service) only generate a new key if no such file yet exists. As such, this hard-coded key is likely to be used by default. This could allow an attacker to remotely execute code, manipulate configuration, or cause a denial-of-service condition.
CVE-2022-30271 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H).
The affected product SSH service is controlled by five preconfigured accounts, all of which come with default hard-coded credentials. This could allow an attacker to manipulate configuration, remotely execute code, and cause a denial-of-service condition.
CVE-2022-30270 has been assigned to this vulnerability. A CVSS v3 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).
The affected device communicates with an XRT Lan-to-radio gateway by means of an embedded client. Credentials for accessing this gateway are stored after being encrypted with the tiny encryption algorithm (TEA) in ECB mode using a hardcoded key, which could allow an attacker to manipulate the device configuration.
CVE-2022-30274 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:N/I:H/A:N).
The affected product allows for custom application installation via STS software, the C toolkit, or the ACE1000 Easy Configurator. Application images were found to have no authentication (in the form of firmware signing) and only relied on insecure checksums for regular integrity checks. This could allow an authenticated attacker to run remote code execution or cause a denial-of-service condition.
CVE-2022-30269 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H).
An attacker capable of communicating with and authenticating to a Motorola ACE1000 RTU via SSH or Web UI could push malicious firmware images to the RTU, which could allow firmware manipulation, remote code execution, and a denial-of-service condition.
CVE-2022-30272 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:H/UI:N/S:U/C:N/I:H/A:H).
Daniel dos Santos and Jos Wetzels from Forescout Technologies reported these vulnerabilities to CISA.
Motorola Solutions recommends the following:
While individual remediation steps are specified, note all vulnerabilities listed above can be resolved by upgrading the ACE1000 to MC-EDGE intelligent RTU.
CVE-2022-30269: To remediate, use the “Secured Download and Installation for ACE1000” procedure.
CVE-2022-30272: To remediate, use the “Secured Download and Installation for ACE1000” procedure.
CVE-2022-30271: To remediate, manually rotate the private key using the “ACE1000 SSH Key Rotation” process.
CVE-2022-30270: To remediate, users should change their password manually. This process can be found in the ACE1000 user guide.
CVE-2022-30274: Upgrade to MOTOTRBO Capacity Max.
For user guide and procedural information mentioned within this report, use the Contact Us form and select “Other” 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-12-146-01B–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 exploits specifically target these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30269
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30270
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30271
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30272
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30274
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