CVE-2021-33537: weidmueller ie-wl-bl-ap-cl-eu_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2021-33537 is a high (CVSS 8.8) Classic Buffer Overflow vulnerability in weidmueller ie-wl-bl-ap-cl-eu_firmware. EPSS estimates a 1.61% chance of exploitation in the next 30 days, higher than 75.7% of scored vulnerabilities.

Timeline

1. 25-06-2021
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

Description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable remote code execution vulnerability exists in the iw_webs configuration parsing functionality. A specially crafted user name entry can cause an overflow of an error message buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.