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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:*", "matchCriteriaId": "E1F45B27-504B-4202-87B8-BD3B094003F1", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*", "matchCriteriaId": "F2FB2B98-DFD2-420A-8A7F-9B288651242F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows."}, {"lang": "es", "value": "El servidor HTTP Apache 2.4.17 y 2.4.18, cuando mod_http2 est\u00e1 activado, no limita el n\u00famero de trabajadores de flujo simult\u00e1neos para una sola conexi\u00f3n HTTP/2, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (corte de flujo de procesamiento) a trav\u00e9s de las ventanas de control de flujo modificadas."}], "id": "CVE-2016-1546", "lastModified": "2023-11-07T02:29:57.543", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": 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"https://security.gentoo.org/glsa/201610-02"}, {"source": "cret@cert.org", "url": "https://security.netapp.com/advisory/ntap-20180601-0001/"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-399"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2017:1161", "cpe": "cpe:/a:redhat:rhel_software_collections:2::el6", "package": "httpd24-httpd-0:2.4.25-9.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2017-04-26T00:00:00Z"}, {"advisory": "RHSA-2017:1161", "cpe": "cpe:/a:redhat:rhel_software_collections:2::el6", "package": "httpd24-httpd-0:2.4.25-9.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS", "release_date": "2017-04-26T00:00:00Z"}, {"advisory": "RHSA-2017:1161", "cpe": "cpe:/a:redhat:rhel_software_collections:2::el7", "package": "httpd24-httpd-0:2.4.25-9.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2017-04-26T00:00:00Z"}, {"advisory": "RHSA-2017:1161", "cpe": "cpe:/a:redhat:rhel_software_collections:2::el7", "package": "httpd24-httpd-0:2.4.25-9.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS", "release_date": "2017-04-26T00:00:00Z"}], "bugzilla": {"description": "httpd: mod_http2 denial-of-service by thread starvation", "id": "1336350", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1336350"}, "csaw": false, "cvss": {"cvss_base_score": "4.3", "cvss_scoring_vector": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "status": "verified"}, "details": ["The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows.", "A denial of service flaw was found in httpd's mod_http2 module. A remote attacker could use this flaw to block server threads for long times, causing starvation of worker threads, by manipulating the flow control windows on streams."], "name": "CVE-2016-1546", "package_state": [{"cpe": "cpe:/a:redhat:cloudforms_managementengine:5", "fix_state": "Not affected", "package_name": "httpd", "product_name": "CloudForms Management Engine 5"}, {"cpe": "cpe:/a:redhat:directory_server:8", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Directory Server 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:5", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Application Platform 5"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:6", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Application Platform 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:1", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Web Server 1"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:2", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Web Server 2"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:3", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Web Server 3"}], "public_date": "2016-04-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-1546\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-1546\nhttp://httpd.apache.org/security/vulnerabilities_24.html"], "threat_severity": "Moderate", "upstream_fix": "httpd 2.4.20"}