Quantum Secular Labs / Blog / Advisories

CVE-2017-17098: Gps Server Gps Tracking Software: Improper Control of Generation of Code

CVE-2017-17098 is rated critical with a CVSS v3.0 base score of 9.8 and affects Gps Server Gps Tracking Software. 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

The writeLog function in fn_common.php in gps-server.net GPS Tracking Software (self hosted) through 3.0 allows remote attackers to inject arbitrary PHP code via a crafted request that is mishandled during admin log viewing, as demonstrated by <?php system($_GET[cmd]); ?> in a login request.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • 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: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-94: Improper Control of Generation of Code

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Affected products

  • Gps Server Gps Tracking Software: up to and including 3.0

References