LG Simple Editor cp Command Directory Traversal Remote Code Execution Vulnerability

The impact of CVE-2023-40498 is severe. An attacker can exploit this vulnerability to execute arbitrary code with SYSTEM privileges, effectively gaining complete control over the affected machine. This could involve installing malware, stealing sensitive data, modifying system configurations, or using the compromised system as a launchpad for further attacks within the network. The lack of authentication requirement significantly broadens the attack surface, making it accessible to a wide range of attackers. This vulnerability shares similarities with other file manipulation vulnerabilities where insufficient input validation allows for arbitrary code execution.

Organizations utilizing LG Simple Editor, particularly those with internet-facing deployments or shared hosting environments, are at significant risk. Systems with weak file access controls or those lacking robust network segmentation are especially vulnerable. Legacy configurations of LG Simple Editor are also a concern, as they may not receive timely security updates.

• windows / supply-chain:

Get-Process -Name "LGSimpleEditor"
Get-ScheduledTask | Where-Object {$_.TaskName -like "*LGSimpleEditor*"}
Get-WinEvent -LogName Application -Filter "EventID=1001 AND Source='LGSimpleEditor'"

• generic web:

curl -I http://<target_ip>/LGSimpleEditor/makeDetailContent.jsp?path=../../../../windows/system32/cmd.exe

1. 2024-05-03Disclosure

   disclosure

1. Gereserveerd2023-08-14
2. Gepubliceerd2024-05-03
3. Gewijzigd2024-09-18
4. EPSS bijgewerkt2026-04-02

The primary mitigation for CVE-2023-40498 is to upgrade to a patched version of LG Simple Editor as soon as it becomes available. Until a patch is released, consider implementing temporary workarounds. Restrict network access to the LG Simple Editor application to only authorized users. Implement strict file access controls to limit the attacker's ability to write to sensitive locations. Monitor system logs for suspicious activity related to file operations and command execution. After upgrading, verify the fix by attempting to trigger the directory traversal vulnerability using a crafted path; the operation should fail with an appropriate error message.