HOME SPOT CUBE2 vulnerable to OS command injection


HOME SPOT CUBE2 provided by KDDI CORPORATION contains an OS command injection vulnerability (CWE-78) due to improper processing of data received from DHCP server.

Alice Rose reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 8.8 (High) [IPA Score]
  • Attack Vector: Adjacent Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 5.8 (Medium) [IPA Score]
  • Access Vector: Adjacent Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

  • HOME SPOT CUBE2 V102 and earlier


An arbitrary OS command may be executed on the product if a malicious DHCP server is placed on the WAN side of the product.

[Apply the workaround]
Applying following workaround may mitigate the impact of this vulnerability.
  • Connect the WAN port of the product to a trusted ISP line

The developer states that an attack exploiting this vulnerability is not realistic if the WAN port of the product is connected to a trusted ISP line.
Vendor Information

CWE (What is CWE?)

  1. OS Command Injection(CWE-78) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2022-33948

  1. JVN : JVN#41017328
Revision History

  • [2022/06/29]
      Web page was published