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"Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via \"H2Push off\" will mitigate this vulnerability for unpatched servers."}, {"lang": "es", "value": "Apache HTTP Server versiones 2.4.20 hasta 2.4.43.. Un valor especialmente dise\u00f1ado para el encabezado \"Cache-Digest\" en una petici\u00f3n HTTP/2 resultar\u00eda en un bloqueo cuando el servidor realmente intenta un PUSH HTTP/2 un recurso mas tarde. Una configuraci\u00f3n de la funcionalidad HTTP/2 por medio de \"H2Push off\" mitigar\u00e1 esta vulnerabilidad para los servidores no parcheados"}], "id": "CVE-2020-9490", "lastModified": "2023-11-07T03:26:55.377", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-08-07T16:15:12.043", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"}, {"source": "security@apache.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"}, {"source": "security@apache.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"}, {"source": "security@apache.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/160392/Apache-2.4.43-mod_http2-Memory-Corruption.html"}, {"source": "security@apache.org", "tags": ["Vendor Advisory"], "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-9490"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/r0b6541c5fb2f8fb383861333400add7def625bc993300300de0b4f8d%40%3Ccvs.httpd.apache.org%3E"}, {"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E"}, {"source": "security@apache.org", "url": 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{"acknowledgement": "Red Hat would like to thank the Apache project for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:3714", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "httpd:2.4-8020020200824162909.4cda2c84", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-09-10T00:00:00Z"}, {"advisory": "RHSA-2020:3734", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "httpd:2.4-8000020200825105249.f8e95b4e", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-09-14T00:00:00Z"}, {"advisory": "RHSA-2020:3726", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "httpd:2.4-8010020200824180659.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-09-11T00:00:00Z"}, {"advisory": "RHSA-2020:3733", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "httpd24-httpd-0:2.4.34-18.el6.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2020-09-14T00:00:00Z"}, {"advisory": "RHSA-2020:3733", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-18.el7.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-09-14T00:00:00Z"}, {"advisory": "RHSA-2020:3733", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-18.el7.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-09-14T00:00:00Z"}, {"advisory": "RHSA-2020:3733", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-18.el7.1", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-09-14T00:00:00Z"}], "bugzilla": {"description": "httpd: Push diary crash on specifically crafted HTTP/2 header", "id": "1866560", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1866560"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via \"H2Push off\" will mitigate this vulnerability for unpatched servers.", "A flaw was found in Apache httpd in versions prior to 2.4.46. A specially crafted Cache-Digest header triggers negative argument to memmove() that could lead to a crash and denial of service. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "Configuring the HTTP/2 feature via \"H2Push off\" will mitigate this vulnerability."}, "name": "CVE-2020-9490", "package_state": [{"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_core_services:1", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat JBoss Core Services"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:2", "fix_state": "Out of support scope", "package_name": "httpd", "product_name": "Red Hat JBoss Enterprise Web Server 2"}], "public_date": "2020-08-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-9490\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-9490\nhttps://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-9490"], "statement": "As per upstream this flaw only affects Apache HTTP Server versions 2.4.20 to 2.4.43. Therefore only httpd packages shipped with Red Hat Enterprise Linux 8 are affected.", "threat_severity": "Important", "upstream_fix": "httpd 2.4.44"}