CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
27.9%
Successful exploitation of these vulnerabilities could lead to an attacker executing arbitrary code via malicious project files.
The following version of Cscape Envision RV, a control system remote access management software, is affected:
3.2.1 OUT-OF-BOUNDS READ CWE-125
Cscape Envision RV version 4.60 is vulnerable to an out-of-bounds read vulnerability when parsing project (i.e. HMI) files. The product lacks proper validation of user-supplied data, which could result in reads past the end of allocated data structures. An attacker could leverage these vulnerabilities to execute arbitrary code in the context of the current process.
CVE-2023-0621 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
3.2.2 OUT-OF-BOUNDS WRITE CWE-787
Cscape Envision RV version 4.60 is vulnerable to an out-of-bounds write vulnerability when parsing project (i.e. HMI) files. The product lacks proper validation of user-supplied data, which could result in writes past the end of allocated data structures. An attacker could leverage these vulnerabilities to execute arbitrary code in the context of the current process.
CVE-2023-0622 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
3.2.3 OUT-OF-BOUNDS WRITE CWE-787
Cscape Envision RV version 4.60 is vulnerable to an out-of-bounds write vulnerability when parsing project (i.e. HMI) files. The product lacks proper validation of user-supplied data, which could result in writes past the end of allocated data structures. An attacker could leverage these vulnerabilities to execute arbitrary code in the context of the current process.
CVE-2023-0623 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Michael Heinzl reported these vulnerabilities to CISA.
Horner Automation fixed these vulnerabilities in Version 4.70, and recommends all users update affected devices to the latest versions.
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.
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 exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-0621
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-0622
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-0623
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cwe.mitre.org/data/definitions/125.html
cwe.mitre.org/data/definitions/787.html
cwe.mitre.org/data/definitions/787.html
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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
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www.cisa.gov/uscert/ncas/tips/ST04-014
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