Eaton's easySoft software v7.20 and prior are susceptible to file parsing type confusion remote code execution vulnerability. A malicious entity can execute a malicious code or make the application crash by tricking user upload a malformed .E70 file in the application. The vulnerability arises due to improper validation of user data supplied through E70 file which is causing Type Confusion.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-6656
• https://us-cert.cisa.gov/ics/advisories/icsa-21-007-03
• https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/easySoft-eaton-vulnerability-advisory.pdf
• https://www.zerodayinitiative.com/advisories/ZDI-20-1441/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1442/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1444/