Vulnerability Description
An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password derived from the MD5 hash of the username and serial number. The serial number can be retrieved by an unauthenticated user at /info.xml. Attempts to change the user password via passwd or other tools have no effect.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Enphase | Envoy Firmware | d4.0 |
| Enphase | Envoy | - |
Related Weaknesses (CWE)
References
- https://enphase.com/en-us/products-and-services/envoy-and-combinerProductVendor Advisory
- https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-faExploitThird Party Advisory
- https://stage2sec.comThird Party Advisory
- https://enphase.com/en-us/products-and-services/envoy-and-combinerProductVendor Advisory
- https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-faExploitThird Party Advisory
- https://stage2sec.comThird Party Advisory
FAQ
What is CVE-2020-25754?
CVE-2020-25754 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered on Enphase Envoy R3.x and D4.x devices. There is a custom PAM module for user authentication that circumvents traditional user authentication. This module uses a password deriv...
How severe is CVE-2020-25754?
CVE-2020-25754 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-25754?
Check the references section above for vendor advisories and patch information. Affected products include: Enphase Envoy Firmware, Enphase Envoy.