CVE-2020-6656: File parsing Type Confusion Remote code execution vulerability
First published: Thu Jan 07 2021(Updated: )
Eaton's easySoft software v7.xx prior to v7.22 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.
Credit: CybersecurityCOE@eaton.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Eaton EASYsoft | >=7.00<7.20 | |
| Eaton Versions 7.20 and prior of EASYsoft are affected |
Remedy
Apply the patch once it is provided by Eaton.
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Reference Links
- 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/
- https://www.cisa.gov/news-events/ics-advisories/icsa-21-007-03 (Advisory)
Frequently Asked Questions
What is the vulnerability identifier for this issue?
The vulnerability identifier for this issue is CVE-2020-6656.
What is the severity of CVE-2020-6656?
CVE-2020-6656 has a severity score of 7.8 (high).
Which software versions are affected by CVE-2020-6656?
Versions of Eaton's easySoft software prior to v7.22 (7.00 to 7.20) are affected by CVE-2020-6656.
What is the impact of CVE-2020-6656?
The vulnerability allows a malicious entity to execute a malicious code or crash the application by tricking the user into uploading a malformed .E70 file.
Where can I find more information about CVE-2020-6656?
You can find more information about CVE-2020-6656 in the following references: [Link 1](https://us-cert.cisa.gov/ics/advisories/icsa-21-007-03), [Link 2](https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/easySoft-eaton-vulnerability-advisory.pdf), [Link 3](https://www.zerodayinitiative.com/advisories/ZDI-20-1441/).
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- canonical/eaton versions 7.20 and prior of easysoft are affected