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CVE-2018-15486: Kone Group Controller Firmware: Authentication bypass

CVE-2018-15486 is rated critical with a CVSS v3.0 base score of 9.1 and NVD lists Kone Group Controller Firmware as the affected product. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.

Vulnerability description

An issue was discovered on KONE Group Controller (KGC) devices before 4.6.5. Unauthenticated Local File Inclusion and File modification is possible through the open HTTP interface by modifying the name parameter of the file endpoint, aka KONE-02.

Severity breakdown

CVSS v3.0 9.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: None. No effect on availability.

Underlying weakness

CWE-829: Inclusion of Functionality from Untrusted Control Sphere

The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

Affected products

  • Kone Group Controller Firmware: before 4.6.5

References