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High · 7.5 CVE-2021-33536 EUVD-2021-20228GHSA-32vx-68rr-3qv3

WEIDMUELLER: WLAN devices affected by Denial-of-Service vulnerability

Published Jun 25, 2021 · Updated Sep 17, 2024 · Assigned by CERTVDE

Description

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.

Affected products

VendorProductAffectedFixed
Weidmüller IE-WL(T)-BL-AP-CL-XX IE-WL-BL-AP-CL-EU (2536600000) – ≤ V1.16.18 (Build 18081617), IE-WLT-BL-AP-CL-EU (2536650000) – ≤ V1.16.18 (Build 18081617), IE-WL-BL-AP-CL-US (2536660000) – ≤ V1.16.18 (Build 18081617), IE-WLT-BL-AP-CL-US (2536670000) – ≤ V1.16.18 (Build 18081617) —
Weidmüller IE-WL(T)-VL-AP-CL-XX IE-WL-VL-AP-BR-CL-EU (2536680000) – ≤ V1.11.10 (Build 18122616), IE-WLT-VL-AP-BR-CL-EU (2536690000) – ≤ V1.11.10 (Build 18122616), IE-WL-VL-AP-BR-CL-US (2536700000) – ≤ V1.11.10 (Build 18122616), IE-WLT-VL-AP-BR-CL-US (2536710000) – ≤ V1.11.10 (Build 18122616) —

Advisories 1

References