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pfSense: pfSense-SA-23_06.webgui: Authenticated Command Execution in the WebGUI

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pfSense: pfSense-SA-23_06.webgui: Authenticated Command Execution in the WebGUI

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/11/2023
Created
06/23/2023
Added
06/23/2023
Modified
06/26/2023

Description

A potential authenticated arbitrary command execution vulnerability was found in interfaces_bridge_edit.php, a component of the pfSense Plus and pfSense CE software GUI. When creating or editing a bridge interface on interfaces_bridge_edit.php, the submitted POST "bridgeif" value is used before it is validated. Subsequently, that function calls others which in turn use the submitted interface name in shell commands. Due to a lack of escaping on commands in the functions being called, it is possible to execute arbitrary commands with a properly formatted submission value for "bridgeif" in POST operations. This problem is present on pfSense Plus version 23.01, pfSense CE version 2.6.0, and earlier versions of both. A user with sufficient privileges to access interfaces_bridge_edit.php may be able to execute arbitrary shell commands.

Solution(s)

  • pfsense-upgrade-latest

References

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