NULL pointer dereference in PEPPERL+FUCHS products - CVE-2020-12514

Vulnerability identifier: #VU49569

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-12514

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in strlen. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

IO-Link Master
IO-Link Master DR-8-PNIO-T
IO-Link Master DR-8-PNIO-P
IO-Link Master DR-8-PNIO
IO-Link Master 8-PNIO-L
IO-Link Master 8-PNIO
IO-Link Master 4-PNIO
IO-Link Master DR-8-EIP-T
IO-Link Master DR-8-EIP-P
IO-Link Master 8-EIP-L
IO-Link Master 8-EIP
IO-Link Master 4-EIP

Install updates from vendor's website.

IO-Link Master - update to 1.6.11
IO-Link Master DR-8-PNIO-T - update to 1.5.48
IO-Link Master DR-8-PNIO-P - update to 1.5.48
IO-Link Master DR-8-PNIO - update to 1.5.48
IO-Link Master 8-PNIO-L - update to 1.5.48
IO-Link Master 8-PNIO - update to 1.5.48
IO-Link Master 4-PNIO - update to 1.5.48
IO-Link Master DR-8-EIP-T - update to 1.5.48
IO-Link Master DR-8-EIP-P - update to 1.5.48
IO-Link Master 8-EIP-L - update to 1.5.48
IO-Link Master 8-EIP - update to 1.5.48
IO-Link Master 4-EIP - update to 1.5.48

• https://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-pepperl-fuchs-io-link-master-series/

• Multiple vulnerabilities in Pepperl+Fuchs IO-Link Master Series