{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2019-03-29T00:00:00", "descriptions": [{"lang": "en", "value": "When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0). This allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources."}], "metrics": [{"cvssV3_0": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2019-11-12T13:27:05", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "RHSA-2019:0741", "tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2019:0741"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/envoyproxy/envoy/issues/6434"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2019-9900", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0). This allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "RHSA-2019:0741", "refsource": "REDHAT", "url": "https://access.redhat.com/errata/RHSA-2019:0741"}, {"name": "https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history", "refsource": "CONFIRM", "url": "https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history"}, {"name": "https://github.com/envoyproxy/envoy/issues/6434", "refsource": "CONFIRM", "url": "https://github.com/envoyproxy/envoy/issues/6434"}, {"name": "https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM", "refsource": "CONFIRM", "url": "https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM"}, {"name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h", "refsource": "CONFIRM", "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T22:01:55.177Z"}, "title": "CVE Program Container", "references": [{"name": "RHSA-2019:0741", "tags": ["vendor-advisory", "x_refsource_REDHAT", "x_transferred"], "url": "https://access.redhat.com/errata/RHSA-2019:0741"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/envoyproxy/envoy/issues/6434"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2019-9900", "datePublished": "2019-04-25T14:55:57", "dateReserved": "2019-03-21T00:00:00", "dateUpdated": "2024-08-04T22:01:55.177Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "BF47B6A7-F357-4074-B90D-8BEB0AB53DC0", "versionEndIncluding": "1.9.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:openshift_service_mesh:-:*:*:*:*:*:*:*", "matchCriteriaId": "AD6D2D18-27C3-44CF-804B-BE9270ED5077", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0). This allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources."}, {"lang": "es", "value": "Al analizar los valores de encabezado HTTP/1.x, Envoy versi\u00f3n 1.9.0 y anteriores, no rechazan los caracteres de cero incrustados (NUL, ASCII 0x0). Esto permite que los atacantes remotos que crean valores de encabezado que contienen caracteres NUL insertados puedan omitir potencialmente las reglas de coincidencia de encabezado, logrando el acceso a recursos no autorizados."}], "id": "CVE-2019-9900", "lastModified": "2023-11-07T03:13:48.520", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 3.7, "source": "cve@mitre.org", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-04-25T15:29:01.497", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2019:0741"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/issues/6434"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-x74r-f4mw-c32h"}, {"source": "cve@mitre.org", "url": "https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Envoy security team for reporting this issue.", "affected_release": [{"advisory": "RHSA-2019:0741", "cpe": "cpe:/a:redhat:service_mesh:0", "package": "servicemesh-proxy-0:0.9.1-1.el7", "product_name": "OpenShift Service Mesh Tech Preview", "release_date": "2019-04-10T00:00:00Z"}], "bugzilla": {"description": "istio/envoy: Authorization bypass via null characters injection in HTTP/1.x", "id": "1698020", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1698020"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L", "status": "verified"}, "cwe": "CWE-20", "details": ["When parsing HTTP/1.x header values, Envoy 1.9.0 and before does not reject embedded zero characters (NUL, ASCII 0x0). This allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources.", "A flaw was found in Envoy version 1.9.0 and older, where Envoy does not reject embedded zero characters (NUL, ASCII 0x0) when processing HTTP/1.x header values. This flaw allows remote attackers crafting header values containing embedded NUL characters to potentially bypass header matching rules, gaining access to unauthorized resources."], "name": "CVE-2019-9900", "public_date": "2019-04-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-9900\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-9900"], "threat_severity": "Important"}