CVE-2021-33536: WEIDMUELLER: WLAN devices affected by Denial-of-Service vulnerability
First published: Fri Jun 25 2021(Updated: )
In Weidmueller Industrial WLAN devices in multiple versions an exploitable denial-of-service vulnerability exists in ServiceAgent functionality. A specially crafted packet can cause an integer underflow, triggering a large memcpy that will access unmapped or out-of-bounds memory. An attacker can send this packet while unauthenticated 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 Weidmueller Industrial WLAN devices vulnerability?
The vulnerability ID for this Weidmueller Industrial WLAN devices vulnerability is CVE-2021-33536.
What is the severity level of CVE-2021-33536?
The severity level of CVE-2021-33536 is high with a severity value of 7.5.
Which software versions are affected by CVE-2021-33536?
The affected software versions for CVE-2021-33536 are Weidmueller Ie-wl-bl-ap-cl-eu Firmware up to and including version 1.16.18, Weidmueller Ie-wlt-bl-ap-cl-eu Firmware up to and including version 1.16.18, Weidmueller Ie-wl-bl-ap-cl-us Firmware up to and including version 1.16.18, Weidmueller Ie-wlt-bl-ap-cl-us Firmware up to and including version 1.16.18, Weidmueller Ie-wl-vl-ap-br-cl-eu Firmware up to and including version 1.16.18, Weidmueller Ie-wlt-vl-ap-br-cl-eu Firmware up to and including version 1.16.18, Weidmueller Ie-wl-vl-ap-br-cl-us Firmware up to and including version 1.16.18, and Weidmueller Ie-wlt-vl-ap-br-cl-us Firmware up to and including version 1.16.18.
What is the CWE ID for CVE-2021-33536?
The CWE ID for CVE-2021-33536 is CWE-191.
How can I fix the CVE-2021-33536 vulnerability?
To fix the CVE-2021-33536 vulnerability, it is recommended to update the affected Weidmueller Industrial WLAN devices to a version that is not vulnerable.
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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