CVE-2021-33535: In Weidmueller Industrial WLAN devices in multiple versions an exploitable format string vulnerability exists in the iw_console conio_writestr functionality. A specially crafted time server entry c...

Summary

In Weidmueller Industrial WLAN devices in multiple versions an exploitable format string vulnerability exists in the iw_console conio_writestr functionality. A specially crafted time server entry can cause an overflow of the time server buffer, resulting in remote code execution. An attacker can sen...

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
weidmueller	ie-wl-bl-ap-cl-eu_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware::::::::`
weidmueller	ie-wlt-bl-ap-cl-eu_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware::::::::`
weidmueller	ie-wl-bl-ap-cl-us_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware::::::::`
weidmueller	ie-wlt-bl-ap-cl-us_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware::::::::`
weidmueller	ie-wl-vl-ap-br-cl-eu_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware::::::::`
weidmueller	ie-wlt-vl-ap-br-cl-eu_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware::::::::`
weidmueller	ie-wl-vl-ap-br-cl-us_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware::::::::`
weidmueller	ie-wlt-vl-ap-br-cl-us_firmware	<= 1.16.18 <= 1.11.10 `cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware::::::::`

Original advisory text

In Weidmueller Industrial WLAN devices in multiple versions an exploitable format string vulnerability exists in the iw_console conio_writestr functionality. A specially crafted time server entry c...

In Weidmueller Industrial WLAN devices in multiple versions an exploitable format string vulnerability exists in the iw_console conio_writestr functionality. A specially crafted time server entry can cause an overflow of the time server buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

References

https://cert.vde.com/en-us/advisories/vde-2021-026 Third Party Advisory