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OpenAdvisories
High VDE-2018-010 3 CVEs

WAGO: Multiple vulnerabilities in e!DISPLAY products

Published Jul 10, 2018 · Updated May 22, 2025 · Revision 3

Vendor: WAGO Product: e!DISPLAY

Summary

An unauthenticated user can exploit a vulnerability (CVE-2018-12981) to inject code in the WBM via reflected cross-site scripting (XSS), if he is able trick a user to open a special crafted web site. This could allow an attacker to execute code in the context of the user and execute arbitrary commands with restriction to the permissions of the user. Authenticated users can use a vulnerability to inject code in the WBM via persistent cross-site scripting (XSS) via special crafted requests which will be rendered and/or executed in the browser. Authenticated WBM users can transfer arbitrary files to different file system locations (CVE- 2018-12980) to which the web server has the required permissions and partially allowing replacing existing files due weak file permissions (CVE-2018-12979) which can result in an authentication bypass.

Details

Impact
This advisory is based upon the report of SEC Consult.

**CVE-2018-12981**

**Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CWE- 79)**

**Severity: 8.0 (CVSS:3.0:AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)**

The vulnerability can be exploited by authenticated and unauthenticated users by sending special crafted requests to the web server allowing injecting code within the WBM. The code will be rendered and/or executed in the browser of the user's browser.

**CVE-2018-12980**

**Unrestricted Upload of File with Dangerous Type (CWE-434)**

**Severity: 8.0 (CVSS:3.0:AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)**

The vulnerability allows an authenticated user to upload arbitrary files to the file system with the permissions of the web server.

**CVE-2018-12979**

**Incorrect Permission Assignment for Critical Resource (CWE-732)**

**Severity: 7.5 (CVSS:3.0:AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)**

Weak permissions allow an authenticated user to overwrite critical files by abusing the unrestricted file upload in the WBM.

Remediation
Update your device to the latest firmware (FW 02). In case this is not feasible limit the access to trusted users and devices.

For details on how to obtain the new firmware, please send a request by email to support@wago.com.

Vulnerabilities 3

  • Unscored —
    CVE-2018-12979 Public exploit

    An issue was discovered on WAGO e!DISPLAY 762-3000 through 762-3003 devices with firmware before FW 02. Weak permission…

  • Unscored —
    CVE-2018-12980 Public exploit EPSS 30%

    An issue was discovered on WAGO e!DISPLAY 762-3000 through 762-3003 devices with firmware before FW 02. The vulnerabili…

  • Unscored —
    CVE-2018-12981 Public exploit

    An issue was discovered on WAGO e!DISPLAY 762-3000 through 762-3003 devices with firmware before FW 02. The vulnerabili…

Revision history

  1. #3

    Fix: removed ia, firmware category, version space, distribution, added distribution, quotation mark

  2. #2

    added vendor name to title

  3. #1

    initial revision

References