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
30.3%
Successful exploitation of these vulnerabilities could lead to a heap buffer overflow, release of unallocated memory, or a read access violation.
The following components of Automation Worx Software Suite are affected:
3.2.1 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119
In Phoenix Contact Automation Worx Software Suite up to version 1.89, manipulated PC Worx or Config+ files could lead to a heap buffer overflow or a read access violation. Availability, integrity, or confidentiality of an application programming workstation could be compromised by attacks using these vulnerabilities.
CVE-2022-3461 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; 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 READ CWE-125
In Phoenix Contact Automation Worx Software Suite up to version 1.89, unauthorized users could read memory beyond the intended scope due to insufficient validation of input data. Availability, integrity, or confidentiality of an application programming workstation could be compromised by attacks using these vulnerabilities.
CVE-2022-3737 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; 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. CERT@VDE coordinated these vulnerabilities with Phoenix Contact.
Phoenix Contact recommends users update to the latest version of Automation Worx Software Suite and exchange project files only via secure file exchange services. Project files should not be exchanged via unencrypted email.
CERT@VDE has released an advisory on these vulnerabilities, accessible here.
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.
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-2022-3461
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-3737
cert.vde.com/en/advisories/VDE-2022-048/
cisa.gov/ics
cisa.gov/ics
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cwe.mitre.org/data/definitions/119.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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