CVE-2021-4477: Belden Hirschmann HiLCOS OpenBAT, заобикаляне на вход и

Описание

Оригинално описание

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.

Засегнати продукти

• Belden Hirschmann HiLCOS OpenBAT: 3.80-REL; 8.90-REL; 9.00-REL; 9.00-RU1; 9.10-REL; 9.12-REL; 9.12-RU1; 9.12-RU2; 9.12-RU3; 9.12-RU4; 9.12-RU5; 9.12-RU6; 9.12-RU7; 9.12-RU8; 9.12-RU9; 9.13-REL; 9.13-RU1; 10.12-REL; 10.12-RU1; 10.12-RU2

Вид слабост

• CWE-284 Неправилен контрол на достъпа

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2021-4477
• https://nvd.nist.gov/vuln/detail/CVE-2021-4477
• https://assets.belden.com/m/5fd1a50fa50cb252/original/Belden-Security-Bulletin-BSECV-1v0-2019-09.pdf
• https://www.vulncheck.com/advisories/hirschmann-hilcos-openbat-bat450-ipv6-ipsec-firewall-bypass