Advisories

Hirschmann HiLCOS OpenBAT BAT450 IPv6 IPsec Firewall Bypass

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severity
critical
date
Affecting
  • Hirschmann HiLCOS OpenBAT Hirschmann HiLCOS 8.80-REL < 10.12-RU2

CWE
  • CWE-284 Improper access control
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Description
Hirschmann HiLCOS OpenBAT and BAT450 products contain a firewall bypass vulnerability in IPv6 IPsec deployments that allows traffic from VPN connections to bypass configured firewall rules. Attackers can exploit this vulnerability by establishing IPv6 IPsec connections (IKEv1 or IKEv2) while simultaneously using an IPv6 Internet connection to circumvent firewall policy enforcement.

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