Advisory Details

April 14th, 2023

Schneider Electric APC Easy UPS Online updateManagerPassword Exposed Dangerous Function Authentication Bypass Vulnerability

ZDI-23-444
ZDI-CAN-19274

CVE ID CVE-2023-29411
CVSS SCORE 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Schneider Electric
AFFECTED PRODUCTS APC Easy UPS Online
VULNERABILITY DETAILS

This vulnerability allows remote attackers to bypass authentication on affected installations of Schneider Electric APC Easy UPS Online. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the updateManagerPassword function. The issue results from the exposure of a dangerous function. An attacker can leverage this vulnerability to bypass authentication on the system.

ADDITIONAL DETAILS Schneider Electric has issued an update to correct this vulnerability. More details can be found at:
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-101-04&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-101-04.pdf
DISCLOSURE TIMELINE
  • 2022-11-30 - Vulnerability reported to vendor
  • 2023-04-14 - Coordinated public release of advisory
CREDIT Esjay (@esj4y)
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