vulnwire
9.8crit

CVE-2017-9855

An issue was discovered in SMA Solar Technology products.

Published 9 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
1.6%
percentile 76%
Public exploits
0
none known

An issue was discovered in SMA Solar Technology products. A secondary authentication system is available for Installers called the Grid Guard system. This system uses predictable codes, and a single Grid Guard code can be used on any SMA inverter. Any such code, when combined with the installer account, allows changing very sensitive parameters. NOTE: the vendor reports that Grid Guard is not an authentication feature; it is only a tracing feature. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

CISA SSVC assessment

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction (EPSS)

1.58% probability of exploitation in the next 30 days, higher than 76% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CISA ADP3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD3.09.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • 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
  • sma sunny_central_1000cp_xt_firmware
  • sma sunny_central_800cp_xt_firmware
  • sma sunny_central_850cp_xt_firmware
  • sma sunny_central_900cp_xt_firmware
  • sma sunny_central_500cp_xt_firmware
  • sma sunny_central_630cp_xt_firmware
  • sma sunny_central_720cp_xt_firmware
  • sma sunny_central_760cp_xt_firmware
  • sma sunny_central_storage_500_firmware
  • sma sunny_central_storage_630_firmware
  • sma sunny_central_storage_720_firmware
  • sma sunny_central_storage_760_firmware
  • sma sunny_central_storage_800_firmware
  • sma sunny_central_storage_850_firmware
  • sma sunny_central_storage_900_firmware
  • sma sunny_central_storage_1000_firmware
  • sma sunny_central_storage_2200_firmware
  • sma sunny_central_storage_2500-ev_firmware
  • sma sunny_boy_storage_2.5_firmware

Classification

Weakness

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.