Quantum Secular Labs / Blog / Advisories

CVE-2018-19514: Ens Webgalamb: Authentication bypass

CVE-2018-19514 is rated critical with a CVSS v3.0 base score of 9.8 and affects Ens Webgalamb. 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

In Webgalamb through 7.0, an arbitrary code execution vulnerability could be exploited remotely without authentication. Exploitation requires authentication bypass to access administrative functions of the site to upload a crafted CSV file with a malicious payload that becomes part of a PHP eval() expression in the subscriber.php file.

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-434: Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Affected products

  • Ens Webgalamb: up to and including 7.0

References