vulnwire
9.8crit

CVE-2017-9859

An issue was discovered in SMA Solar Technology products.

Published 9 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.1%
percentile 66%
Public exploits
0
none known

An issue was discovered in SMA Solar Technology products. The inverters make use of a weak hashing algorithm to encrypt the password for REGISTER requests. This hashing algorithm can be cracked relatively easily. An attacker will likely be able to crack the password using offline crackers. This cracked password can then be used to register at the SMA servers. NOTE: the vendor's position is that "we consider the probability of the success of such manipulation to be extremely low." Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

Exploit prediction (EPSS)

1.13% probability of exploitation in the next 30 days, higher than 66% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.09.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.05.0AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm

References

  • sma.de /en/statement-on-cyber-security.html · x_refsource_MISC, x_transferred
  • horusscenario.com /CVE-information/ · x_refsource_MISC, x_transferred
  • sma.de /fileadmin/content/global/specials/documents/cyber-security/Whitepaper-Cyber-Security-AEN1 · x_refsource_MISC, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.