LG Simple Editor copySessionFolder Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of LG Simple Editor. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the copySessionFolder command. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. . Was ZDI-CAN-19920.
The issue concerns the implementation of the copySessionFolder command, which does not properly validate the path supplied by the user before using it in file operations. An attacker can pass a crafted path containing path traversal sequences (e.g., ../), to escape the allowed directory and place malicious files anywhere on the system. This makes it possible to execute code in the context of the SYSTEM account without needing any privileges.
An attacker can remotely execute arbitrary code with SYSTEM privileges, which means complete takeover of the operating system, including the ability to install malware, steal data, or compromise the integrity of the entire host.
Patches available from the manufacturer should be applied according to references. It is also recommended to restrict network access to the LG Simple Editor service using a firewall to trusted hosts and monitor attempts at unauthorized access.
Installed versions of the LG Simple Editor application — specific versions indicated in the manufacturer's references and in the ZDI-23-1199 advisory.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLg Simple Editor
APPLg3.21.0
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