CVE-2017-9857
The SMAdata2+ communication protocol does not properly use authentication with encryption: it is vulnerable to man in the middle, packet injection, and replay attacks.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in SMA Solar Technology products. The SMAdata2+ communication protocol does not properly use authentication with encryption: it is vulnerable to man in the middle, packet injection, and replay attacks. Any setting change, authentication packet, scouting packet, etc. can be replayed, injected, or used for a man in the middle session. All functionalities available in Sunny Explorer can effectively be done from anywhere within the network as long as an attacker gets the packet setup correctly. This includes the authentication process for all (including hidden) access levels and the changing of settings in accordance with the gained access rights. Furthermore, because the SMAdata2+ communication channel is unencrypted, an attacker capable of understanding the protocol can eavesdrop on communications. NOTE: the vendor's position is that authentication with encryption is not required on an isolated subnetwork. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
- CVSS 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.69% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- sma/sunny boy 3600 firmware · sma/sunny boy 5000 firmware · sma/sunny tripower core1 firmware · sma/sunny tripower 15000tl firmware · sma/sunny tripower 20000tl firmware · sma/sunny tripower 25000tl firmware · sma/sunny tripower 5000tl firmware · sma/sunny tripower 12000tl firmware · sma/sunny tripower 60 firmware · sma/sunny boy 3000tl firmware · sma/sunny boy 3600tl firmware · sma/sunny boy 4000tl firmware · sma/sunny boy 5000tl firmware · sma/sunny boy 1.5 firmware · sma/sunny boy 2.5 firmware · sma/sunny boy 3.0 firmware · sma/sunny boy 3.6 firmware · sma/sunny boy 4.0 firmware · sma/sunny boy 5.0 firmware · sma/sunny central 2200 firmware · +19 more
- Source
- cve@mitre.org
References
- http://www.sma.de/en/statement-on-cyber-security.html
- http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf
- https://horusscenario.com/CVE-information/Third Party Advisory
- http://www.sma.de/en/statement-on-cyber-security.html
- http://www.sma.de/fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1732_07.pdf
- https://horusscenario.com/CVE-information/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.