// For flags

CVE-2024-33893

Ewon Cosy+ Improper Neutralization / Cross Site Scripting

Severity Score

6.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to improper input sanitization. This is fixed in version 21.2s10 and 22.1s3.

The Ewon Cosy+ is a VPN gateway used for remote access and maintenance in industrial environments. If login against the FTP service of the Cosy+ fails, the submitted username is saved in a log. This log is included in the Cosy+ web interface without neutralizing the content. As a result, an unauthenticated attacker is able to inject HTML/JavaScript code via the username of an FTP login attempt.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-04-28 CVE Reserved
  • 2024-08-02 CVE Published
  • 2024-08-19 First Exploit
  • 2024-09-04 EPSS Updated
  • 2024-10-30 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Hms-networks
Search vendor "Hms-networks"
 Ewon Cosy+ Firmware
Search vendor "Hms-networks" for product "Ewon Cosy+ Firmware"
*-
Affected