// For flags

CVE-2020-10619

Advantech WebAccess/NMS saveBackgroundAction Directory Traversal Denial-of-Service Vulnerability

Severity Score

9.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An attacker could use a specially crafted URL to delete files outside the WebAccess/NMS's (versions prior to 3.0.2) control.

Un atacante podría usar una URL especialmente diseñada para eliminar archivos fuera del control de WebAccess/NMS (versiones anteriores a 3.0.2).

This vulnerability allows remote attackers to delete arbitary files on affected installations of Advantech WebAccess/NMS. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the processing of calls to the saveBackground.action endpoint. When parsing the oldImage 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 create a denial-of-service condition on the system.

*Credits: rgod of 9sg
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-03-16 CVE Reserved
  • 2020-04-08 CVE Published
  • 2024-08-03 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')
  • CWE-23: Relative Path Traversal
CAPEC
References (1)
URL Tag Source
https://www.us-cert.gov/ics/advisories/icsa-20-098-01 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Advantech
Search vendor "Advantech"
 Webaccess\/nms
Search vendor "Advantech" for product "Webaccess\/nms"
 < 3.0.2
Search vendor "Advantech" for product "Webaccess\/nms" and version " < 3.0.2"
-
Affected