Published:2022/06/29  Last Updated:2022/06/29

JVN#41017328
HOME SPOT CUBE2 vulnerable to OS command injection

Overview

HOME SPOT CUBE2 provided by KDDI CORPORATION contains an OS command injection vulnerability.

Products Affected

  • HOME SPOT CUBE2 V102 and earlier

Description

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.

Impact

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

Solution

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 Status

Vendor Link
KDDI CORPORATION HOME SPOT CUBE2 (Text in Japanese)

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score: 8.8
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:A/AC:L/Au:N/C:P/I:P/A:P
Base Score: 5.8
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Credit

Alice Rose reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2022-33948
JVN iPedia JVNDB-2022-000049