Advisory Details

August 24th, 2023

(0Day) LG Simple Editor UserManageController getImageByFilename Directory Traversal Information Disclosure Vulnerability

ZDI-23-1195
ZDI-CAN-20015

CVE ID CVE-2023-40513
CVSS SCORE 6.5, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AFFECTED VENDORS LG
AFFECTED PRODUCTS Simple Editor
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of LG Simple Editor. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the getImageByFilename method in the UserManageController class. 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 disclose information in the context of SYSTEM.

ADDITIONAL DETAILS

02/13/23 – The ZDI requested a vendor PSIRT contact.

02/14/23 – The vendor provided PSIRT Contact information.

02/14/23 – The ZDI reported the vulnerability to the vendor.

08/04/23 – The ZDI asked for an update.

08/08/23 – The vendor states that they do not have plans to fix the vulnerability now or in the future.

08/21/23 – The ZDI informed the vendor that we are publishing the case as a zero-day advisory on 08/24/23.

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the application.


DISCLOSURE TIMELINE
  • 2023-02-14 - Vulnerability reported to vendor
  • 2023-08-24 - Coordinated public release of advisory
CREDIT rgod
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