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CVE-2021-4477

Hirschmann HiLCOS OpenBAT BAT450 IPv6 IPsec Firewall Bypass PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Belden / Hirschmann HiLCOS OpenBATaffected 3.80-REL; affected 8.90-REL; affected 9.00-REL; affected 9.00-RU1; affected 9.10-REL; affected 9.12-REL; affected 9.12-RU1; affected 9.12-RU2; affected 9.12-RU3; affected 9.12-RU4; affected 9.12-RU5; affected 9.12-RU6; affected 9.12-RU7; affected 9.12-RU8; affected 9.12-RU9; affected 9.13-REL; affected 9.13-RU1; affected 10.12-REL; affected 10.12-RU1; unaffected 10.12-RU2

CWE

CWE-284

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.