CVE-2021-33530: WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability
First published: Fri Jun 25 2021(Updated: )
In Weidmueller Industrial WLAN devices in multiple versions an exploitable command injection vulnerability exists in encrypted diagnostic script functionality of the devices. A specially crafted diagnostic script file can cause arbitrary busybox commands to be executed, resulting in remote control over the device. An attacker can send diagnostic while authenticated as a low privilege user to trigger this vulnerability.
Credit: info@cert.vde.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Weidmueller Ie-wl-bl-ap-cl-eu Firmware | <=1.16.18 | |
| Weidmueller Ie-wl-bl-ap-cl-eu | ||
| Weidmueller Ie-wlt-bl-ap-cl-eu Firmware | <=1.16.18 | |
| Weidmueller Ie-wlt-bl-ap-cl-eu | ||
| Weidmueller Ie-wl-bl-ap-cl-us Firmware | <=1.16.18 | |
| Weidmueller Ie-wl-bl-ap-cl-us | ||
| Weidmueller Ie-wlt-bl-ap-cl-us Firmware | <=1.16.18 | |
| Weidmueller Ie-wlt-bl-ap-cl-us | ||
| Weidmueller Ie-wl-vl-ap-br-cl-eu Firmware | <=1.16.18 | |
| Weidmueller Ie-wl-vl-ap-br-cl-eu | ||
| Weidmueller Ie-wlt-vl-ap-br-cl-eu Firmware | <=1.16.18 | |
| Weidmueller Ie-wlt-vl-ap-br-cl-eu | ||
| Weidmueller Ie-wl-vl-ap-br-cl-us Firmware | <=1.16.18 | |
| Weidmueller Ie-wl-vl-ap-br-cl-us | ||
| Weidmueller Ie-wlt-vl-ap-br-cl-us Firmware | <=1.16.18 | |
| Weidmueller Ie-wlt-vl-ap-br-cl-us | ||
| Weidmueller Ie-wl-bl-ap-cl-eu Firmware | <=1.11.10 | |
| Weidmueller Ie-wlt-bl-ap-cl-eu Firmware | <=1.11.10 | |
| Weidmueller Ie-wl-bl-ap-cl-us Firmware | <=1.11.10 | |
| Weidmueller Ie-wlt-bl-ap-cl-us Firmware | <=1.11.10 | |
| Weidmueller Ie-wl-vl-ap-br-cl-eu Firmware | <=1.11.10 | |
| Weidmueller Ie-wlt-vl-ap-br-cl-eu Firmware | <=1.11.10 | |
| Weidmueller Ie-wl-vl-ap-br-cl-us Firmware | <=1.11.10 | |
| Weidmueller Ie-wlt-vl-ap-br-cl-us Firmware | <=1.11.10 |
Remedy
For IE-WL(T)-BL-AP-CL-XX versions V1.16.21 (Build 21010513) and greater are fixed. For IE-WL(T)-VL-AP-CL-XX versions V1.11.13 (Build 21010513) and greater are fixed.
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-33530.
What is the severity of CVE-2021-33530?
CVE-2021-33530 has a severity rating of 8.8, which is considered critical.
Which software versions are affected by CVE-2021-33530?
The following Weidmueller Industrial WLAN devices firmware versions are affected: Ie-wl-bl-ap-cl-eu firmware up to and including 1.16.18, Ie-wlt-bl-ap-cl-eu firmware up to and including 1.16.18, Ie-wl-bl-ap-cl-us firmware up to and including 1.16.18, Ie-wlt-bl-ap-cl-us firmware up to and including 1.16.18, Ie-wl-vl-ap-br-cl-eu firmware up to and including 1.16.18, Ie-wlt-vl-ap-br-cl-eu firmware up to and including 1.16.18, Ie-wl-vl-ap-br-cl-us firmware up to and including 1.16.18, and Ie-wlt-vl-ap-br-cl-us firmware up to and including 1.16.18.
How can I exploit CVE-2021-33530?
In order to exploit CVE-2021-33530, an attacker would need to craft a specially designed diagnostic script file and have it executed on the vulnerable Weidmueller Industrial WLAN device.
Is there a fix available for CVE-2021-33530?
At the moment, there does not appear to be a fix available for CVE-2021-33530. It is recommended to follow the guidance provided by the vendor and stay informed about any updates or patches that may be released.
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- vendor/weidmueller
- canonical/weidmueller ie-wl-bl-ap-cl-eu firmware
- version/weidmueller ie-wl-bl-ap-cl-eu firmware/1.16.18
- canonical/weidmueller ie-wl-bl-ap-cl-eu
- canonical/weidmueller ie-wlt-bl-ap-cl-eu firmware
- version/weidmueller ie-wlt-bl-ap-cl-eu firmware/1.16.18
- canonical/weidmueller ie-wlt-bl-ap-cl-eu
- canonical/weidmueller ie-wl-bl-ap-cl-us firmware
- version/weidmueller ie-wl-bl-ap-cl-us firmware/1.16.18
- canonical/weidmueller ie-wl-bl-ap-cl-us
- canonical/weidmueller ie-wlt-bl-ap-cl-us firmware
- version/weidmueller ie-wlt-bl-ap-cl-us firmware/1.16.18
- canonical/weidmueller ie-wlt-bl-ap-cl-us
- canonical/weidmueller ie-wl-vl-ap-br-cl-eu firmware
- version/weidmueller ie-wl-vl-ap-br-cl-eu firmware/1.16.18
- canonical/weidmueller ie-wl-vl-ap-br-cl-eu
- canonical/weidmueller ie-wlt-vl-ap-br-cl-eu firmware
- version/weidmueller ie-wlt-vl-ap-br-cl-eu firmware/1.16.18
- canonical/weidmueller ie-wlt-vl-ap-br-cl-eu
- canonical/weidmueller ie-wl-vl-ap-br-cl-us firmware
- version/weidmueller ie-wl-vl-ap-br-cl-us firmware/1.16.18
- canonical/weidmueller ie-wl-vl-ap-br-cl-us
- canonical/weidmueller ie-wlt-vl-ap-br-cl-us firmware
- version/weidmueller ie-wlt-vl-ap-br-cl-us firmware/1.16.18
- canonical/weidmueller ie-wlt-vl-ap-br-cl-us
- version/weidmueller ie-wl-bl-ap-cl-eu firmware/1.11.10
- version/weidmueller ie-wlt-bl-ap-cl-eu firmware/1.11.10
- version/weidmueller ie-wl-bl-ap-cl-us firmware/1.11.10
- version/weidmueller ie-wlt-bl-ap-cl-us firmware/1.11.10
- version/weidmueller ie-wl-vl-ap-br-cl-eu firmware/1.11.10
- version/weidmueller ie-wlt-vl-ap-br-cl-eu firmware/1.11.10
- version/weidmueller ie-wl-vl-ap-br-cl-us firmware/1.11.10
- version/weidmueller ie-wlt-vl-ap-br-cl-us firmware/1.11.10