2 lines
5.1 KiB
JSON
2 lines
5.1 KiB
JSON
{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"Hirschmann HiLCOS OpenBAT","vendor":"Belden","versions":[{"status":"affected","version":"3.80-REL","versionType":"custom"},{"status":"affected","version":"8.90-REL","versionType":"custom"},{"status":"affected","version":"9.00-REL","versionType":"custom"},{"status":"affected","version":"9.00-RU1","versionType":"custom"},{"status":"affected","version":"9.10-REL","versionType":"custom"},{"status":"affected","version":"9.12-REL","versionType":"custom"},{"status":"affected","version":"9.12-RU1","versionType":"custom"},{"status":"affected","version":"9.12-RU2","versionType":"custom"},{"status":"affected","version":"9.12-RU3","versionType":"custom"},{"status":"affected","version":"9.12-RU4","versionType":"custom"},{"status":"affected","version":"9.12-RU5","versionType":"custom"},{"status":"affected","version":"9.12-RU6","versionType":"custom"},{"status":"affected","version":"9.12-RU7","versionType":"custom"},{"status":"affected","version":"9.12-RU8","versionType":"custom"},{"status":"affected","version":"9.12-RU9","versionType":"custom"},{"status":"affected","version":"9.13-REL","versionType":"custom"},{"status":"affected","version":"9.13-RU1","versionType":"custom"},{"status":"affected","version":"10.12-REL","versionType":"custom"},{"status":"affected","version":"10.12-RU1","versionType":"custom"},{"status":"unaffected","version":"10.12-RU2","versionType":"custom"}]}],"source":"disclosure@vulncheck.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Los productos Hirschmann HiLCOS OpenBAT y BAT450 contienen una vulnerabilidad de omisión de cortafuegos en implementaciones IPv6 IPsec que permite que el tráfico de las conexiones VPN omita las reglas de cortafuegos configuradas. Los atacantes pueden explotar esta vulnerabilidad al establecer conexiones IPv6 IPsec (IKEv1 o IKEv2) mientras utilizan simultáneamente una conexión a Internet IPv6 para eludir la aplicación de la política del cortafuegos."}],"id":"CVE-2021-4477","lastModified":"2026-07-24T22:10:00.140","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.2,"source":"disclosure@vulncheck.com","type":"Secondary"}],"cvssMetricV40":[{"cvssData":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","availabilityRequirement":"NOT_DEFINED","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityRequirement":"NOT_DEFINED","exploitMaturity":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"source":"disclosure@vulncheck.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2021-4477","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2026-04-06T13:16:56.315497Z","version":"2.0.3"}}]},"published":"2026-04-03T23:17:01.043","references":[{"source":"disclosure@vulncheck.com","url":"https://assets.belden.com/m/5fd1a50fa50cb252/original/Belden-Security-Bulletin-BSECV-1v0-2019-09.pdf"},{"source":"disclosure@vulncheck.com","url":"https://www.vulncheck.com/advisories/hirschmann-hilcos-openbat-bat450-ipv6-ipsec-firewall-bypass"}],"sourceIdentifier":"disclosure@vulncheck.com","vulnStatus":"Awaiting Analysis","weaknesses":[{"description":[{"lang":"en","value":"CWE-284"}],"source":"disclosure@vulncheck.com","type":"Secondary"}]}
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