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CVE-2018-25147: Microhard Systems IPn4G: Hard-coded credentials or backdoor

CVE-2018-25147 is rated critical with a CVSS v4.0 base score of 9.3 and NVD lists 11 affected products, including Microhardcorp Ipn4g Firmware. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Microhard Systems IPn4G 1.1.0 contains hardcoded default credentials that cannot be changed through normal gateway operations. Attackers can exploit these default credentials to gain unauthorized root-level access to the device by logging in with predefined username and password combinations.

Severity breakdown

CVSS v4.0 9.3: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

  • Attack vector: Network. Exploitable remotely over the network.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Attack requirements: None. No deployment or execution conditions are needed.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Confidentiality impact (vulnerable system): High. Total loss of confidentiality.
  • Integrity impact (vulnerable system): High. Total loss of integrity.
  • Availability impact (vulnerable system): High. Total loss of availability.
  • Confidentiality impact (subsequent systems): None. No confidentiality impact beyond the vulnerable system.
  • Integrity impact (subsequent systems): None. No integrity impact beyond the vulnerable system.
  • Availability impact (subsequent systems): None. No availability impact beyond the vulnerable system.

Underlying weakness

CWE-1392: Use of Default Credentials

The product uses default credentials (such as passwords or cryptographic keys) for potentially critical functionality.

Affected products

  • Microhardcorp Ipn4g Firmware: 1.1.0 build1098
  • Microhardcorp Ipn3gb Firmware: 2.2.0 build2160
  • Microhardcorp Ipn4gb Firmware: 1.1.6 build1184-14; 1.1.0 rev2_build1090-2; 1.1.0 rev2_build1086
  • Microhardcorp Bullet 3g Firmware: 1.2.0 reva_build1032; 1.2.0 build1076
  • Microhardcorp Vip4gb Firmware: 1.1.6 build_1204; 1.1.6 rev3_build1184-14
  • Microhardcorp Vip4gb Wifi N Firmware: 1.1.6 rev2_build1196
  • Microhardcorp Bullet Lte Firmware: 1.2.0 build1078
  • Microhardcorp Ipn3gii Firmware: 1.2.0 build1076
  • Microhardcorp Ipn4gii Firmware: 1.2.0 build1078
  • Microhardcorp Bulletplus Firmware: 1.3.0 build1036
  • Microhardcorp Dragon Lte Firmware: 1.1.0 build1036

References