Advisory Details

December 15th, 2023

Schneider Electric APC Easy UPS Online deletePdfReportFile Directory Traversal Denial-of-Service Vulnerability

ZDI-23-1794
ZDI-CAN-21370

CVE ID CVE-2023-6407
CVSS SCORE 5.3, AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
AFFECTED VENDORS Schneider Electric
AFFECTED PRODUCTS APC Easy UPS Online
VULNERABILITY DETAILS

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Schneider Electric APC Easy UPS Online. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the deletePdfReportFile method. 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 create a denial-of-service condition on the system.

ADDITIONAL DETAILS Schneider Electric has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/news-events/ics-advisories/icaa-23-346-01
DISCLOSURE TIMELINE
  • 2023-08-09 - Vulnerability reported to vendor
  • 2023-12-15 - Coordinated public release of advisory
CREDIT 06fe5fd2bc53027c4a3b7e395af0b850e7b8a044
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