Advisory Details

May 17th, 2023

Schneider Electric APC Easy UPS Online SNMPDBManager Use of Hard-Coded Credentials Local Privilege Escalation Vulnerability

ZDI-23-638
ZDI-CAN-17585

CVE ID CVE-2022-42973
CVSS SCORE 7.8, AV:L/AC:L/PR:L/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 local attackers to escalate privileges 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 SNMPDBManager class. The issue results from the use of hard-coded credentials. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of 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/icsa-22-347-02
DISCLOSURE TIMELINE
  • 2022-06-17 - Vulnerability reported to vendor
  • 2023-05-17 - Coordinated public release of advisory
CREDIT rgod
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