// For flags

CVE-2020-7521

Schneider Electric APC Easy UPS Online FileUploadServlet processRequest Directory Traversal Remote Code Execution Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists in SFAPV9601 - APC Easy UPS On-Line Software (V2.0 and earlier) when accessing a vulnerable method of `FileUploadServlet` which may lead to uploading executable files to non-specified directories.

Se presenta una vulnerabilidad de Limitación Inapropiada de un Nombre de Ruta en un Directorio Restringido ("Path Traversal") en SFAPV9601 - APC Easy UPS On-Line Software (versiones V2.0 y anteriores) cuando se accede a un método vulnerable de "FileUploadServlet" puede conllevar a una carga de archivos ejecutables hacia directorios no especificados

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Schneider Electric APC Easy UPS Online. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the FileUploadServlet class. When parsing the filename parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

*Credits: rgod
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-21 CVE Reserved
  • 2020-08-17 CVE Published
  • 2023-05-17 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://www.se.com/ww/en/download/document/SEVD-2020-224-04 2020-09-04
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Schneider-electric
Search vendor "Schneider-electric"
 Apc Easy Ups Online Software
Search vendor "Schneider-electric" for product "Apc Easy Ups Online Software"
 <= 2.0
Search vendor "Schneider-electric" for product "Apc Easy Ups Online Software" and version " <= 2.0"
-
Affected