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.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected products
- Belden / Hirschmann HiLCOS OpenBAT3.80-REL – 3.80-REL
- Belden / Hirschmann HiLCOS OpenBAT8.90-REL – 8.90-REL
- Belden / Hirschmann HiLCOS OpenBAT9.00-REL – 9.00-REL
- Belden / Hirschmann HiLCOS OpenBAT9.00-RU1 – 9.00-RU1
- Belden / Hirschmann HiLCOS OpenBAT9.10-REL – 9.10-REL
- Belden / Hirschmann HiLCOS OpenBAT9.12-REL – 9.12-REL
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU1 – 9.12-RU1
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU2 – 9.12-RU2
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU3 – 9.12-RU3
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU4 – 9.12-RU4
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU5 – 9.12-RU5
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU6 – 9.12-RU6
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU7 – 9.12-RU7
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU8 – 9.12-RU8
- Belden / Hirschmann HiLCOS OpenBAT9.12-RU9 – 9.12-RU9
- Belden / Hirschmann HiLCOS OpenBAT9.13-REL – 9.13-REL
- Belden / Hirschmann HiLCOS OpenBAT9.13-RU1 – 9.13-RU1
- Belden / Hirschmann HiLCOS OpenBAT10.12-REL – 10.12-REL
- Belden / Hirschmann HiLCOS OpenBAT10.12-RU1 – 10.12-RU1
- Belden / Hirschmann HiLCOS OpenBAT10.12-RU2 – 10.12-RU2