Vulnerability Details : CVE-2020-25754
Potential exploit
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.
Products affected by CVE-2020-25754
- cpe:2.3:o:enphase:envoy_firmware:d4.0:*:*:*:*:*:*:*
- cpe:2.3:o:enphase:envoy_firmware:r3.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25754
0.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25754
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-25754
-
The product generates a hash for a password, but it uses a scheme that does not provide a sufficient level of computational effort that would make password cracking attacks infeasible or expensive.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-25754
-
https://enphase.com/en-us/products-and-services/envoy-and-combiner
Communication Gateway for solar and storage Systems| Enphase CommunicationProduct;Vendor Advisory
-
https://medium.com/stage-2-security/can-solar-controllers-be-used-to-generate-fake-clean-energy-credits-4a7322e7661a
Can solar controllers be used to generate fake clean energy credits? | by Waylon Grange | Stage 2 Security | May, 2021 | MediumExploit;Third Party Advisory
-
https://stage2sec.com
Cloud Native Cyber Security | Stage 2 Security | United StatesThird Party Advisory
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