Quantum Secular Labs / Blog / Advisories

CVE-2016-11061: Xerox WorkCentre: Command injection

CVE-2016-11061 is rated critical with a CVSS v3.1 base score of 9.8 and NVD lists 25 affected products, including Xerox Workcentre 3655 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

Xerox WorkCentre 3655, 3655i, 58XX, 58XXi, 59XX, 59XXi, 6655, 6655i, 72XX, 72XXi, 78XX, 78XXi, 7970, and 7970i devices before 073.xxx.086.15410 do not properly escape parameters in the support/remoteUI/configrui.php script, which can allow an unauthenticated attacker to execute OS commands on the device.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/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-78: Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

Affected products

  • Xerox Workcentre 3655 Firmware: before 073.060.086.15410
  • Xerox Workcentre 3655i Firmware: before 073.060.086.15410
  • Xerox Workcentre 5865 Firmware: before 073.190.086.15410
  • Xerox Workcentre 5875 Firmware: before 073.190.086.15410
  • Xerox Workcentre 5890 Firmware: before 073.190.086.15410
  • Xerox Workcentre 5865i Firmware: before 073.190.086.15410
  • Xerox Workcentre 5875i Firmware: before 073.190.086.15410
  • Xerox Workcentre 5890i Firmware: before 073.190.086.15410
  • Xerox Workcentre 5945 Firmware: before 073.091.086.15410
  • Xerox Workcentre 5955 Firmware: before 073.091.086.15410
  • Xerox Workcentre 5945i Firmware: before 073.091.086.15410
  • Xerox Workcentre 5955i Firmware: before 073.091.086.15410
  • Xerox Workcentre 6655 Firmware: before 073.110.086.15410
  • Xerox Workcentre 6655i Firmware: before 073.110.086.15410
  • Xerox Workcentre 7200 Firmware: before 073.030.086.15410

References