CVE-2017-20233
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
Hirschmann HiLCOS products (OpenBAT, BAT450, WLC, BAT867) have a firewall filtering vulnerability that fails to correctly filter IPv4 multicast and broadcast traffic when management IP address filtering is disabled, allowing configured filter rules to be bypassed.
Risk Assessment
Attackers with network access can inject or observe multicast and broadcast packets that should have been blocked by the firewall, potentially leading to network confidentiality and integrity breaches.
Recommendation
It is recommended to enable management IP address filtering and update the firmware to the latest version provided by the vendor.
Other vulnerabilities in Hirschmann HiLCOS
See all- CVE-2021-4477Critical
Hirschmann HiLCOS OpenBAT and BAT450 products contain a firewall bypass vulnerability in IPv6 IPsec deployments. Traffic from VPN connections can bypass configured firewall rules. Attackers can exploit this by establishing IPv6 IPsec connections (IKEv1 or IKEv2) while using an IPv6 Internet connection to circumvent firewall policy enforcement.
- CVE-2015-10148High
Hirschmann HiLCOS devices (OpenBAT, WLC, BAT300, BAT54) before version 8.80 and OpenBAT before 9.10 are shipped with identical default SSH and SSL keys that cannot be changed. This allows unauthenticated remote attackers to decrypt or intercept encrypted management communications.
Original NVD description (English source)
Hirschmann HiLCOS products OpenBAT, BAT450, WLC, BAT867 contains a firewall filtering vulnerability that fails to correctly filter IPv4 multicast and broadcast traffic when management IP address filtering is disabled, allowing configured filter rules to be bypassed. Attackers with network access can inject or observe multicast and broadcast packets that should have been blocked by the firewall.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS