VulnerabilityModified
CVE-2020-25754
An issue was discovered on Enphase Envoy R3.x and D4.x devices.
HIGH 7.5EPSS 1.34%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.34% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-916
- Affected
- enphase/envoy firmware
- Source
- cve@mitre.org
References
- https://enphase.com/en-us/products-and-services/envoy-and-combinerProduct, Vendor Advisory
- https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661aExploit, Third Party Advisory
- https://stage2sec.comThird Party Advisory
- https://enphase.com/en-us/products-and-services/envoy-and-combinerProduct, Vendor Advisory
- https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661aExploit, Third Party Advisory
- https://stage2sec.comThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.