Summary
Successful exploitation of these vulnerabilities may cause a heap-based buffer overflow, a stack-based buffer overflow, or a buffer over-read in the affected CODESYS products. This could result in a denial-of-service condition or allow remote code execution.
Vulnerabilities 3
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Unscored —
CODESYS V2 runtime system SP before 2.4.7.55 has a Heap-based Buffer Overflow.
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Unscored —
CODESYS V2 runtime system SP before 2.4.7.55 has a Stack-based Buffer Overflow.
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Unscored —
CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.
Revision history
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#1
ICSA-21-173-03 CODESYS Control V2 communication
References
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ICS Advisory ICSA-21-173-03 Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-173-03
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Recommended Practices
https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B