CVE-2020-11993

{"containers": {"cna": {"affected": [{"product": "Apache HTTP Server", "vendor": "n/a", "versions": [{"status": "affected", "version": "2.4.20 to 2.4.43"}]}], "descriptions": [{"lang": "en", "value": "Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers."}], "problemTypes": [{"descriptions": [{"description": "Push Diary Crash on Specifically Crafted HTTP/2 Header", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-06-06T10:11:52.000Z", "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"}, {"name": "GLSA-202008-04", "tags": ["vendor-advisory", "x_refsource_GENTOO"], "url": "https://security.gentoo.org/glsa/202008-04"}, {"name": "[httpd-dev] 20200808 Security announcements for CVE-2020-9490/CVE-2020-11993 ?", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E"}, {"name": "[httpd-dev] 20200811 Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E"}, {"name": "[httpd-dev] 20200811 Re: Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E"}, {"name": "USN-4458-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4458-1/"}, {"name": "FEDORA-2020-8122a8daa2", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/"}, {"name": "FEDORA-2020-b58dc5df38", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"}, {"name": "openSUSE-SU-2020:1285", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"}, {"name": "openSUSE-SU-2020:1293", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"}, {"name": "DSA-4757", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2020/dsa-4757"}, {"tags": ["x_refsource_MISC"], "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20200814-0005/"}, {"name": "openSUSE-SU-2020:1792", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"}, {"tags": ["x_refsource_MISC"], "url": "https://www.oracle.com/security-alerts/cpujan2021.html"}, {"tags": ["x_refsource_MISC"], "url": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html"}, {"name": "[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - 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Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Push Diary Crash on Specifically Crafted HTTP/2 Header"}]}]}, "references": {"reference_data": [{"name": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993", "refsource": "MISC", "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"}, {"name": "GLSA-202008-04", "refsource": "GENTOO", "url": "https://security.gentoo.org/glsa/202008-04"}, {"name": "[httpd-dev] 20200808 Security announcements for CVE-2020-9490/CVE-2020-11993 ?", "refsource": "MLIST", "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E"}, {"name": "[httpd-dev] 20200811 Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?", "refsource": "MLIST", "url": "https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E"}, {"name": "[httpd-dev] 20200811 Re: Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?", "refsource": "MLIST", "url": "https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E"}, {"name": "USN-4458-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4458-1/"}, {"name": "FEDORA-2020-8122a8daa2", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/"}, {"name": "FEDORA-2020-b58dc5df38", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"}, {"name": "openSUSE-SU-2020:1285", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"}, {"name": "openSUSE-SU-2020:1293", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"}, {"name": "DSA-4757", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2020/dsa-4757"}, {"name": "https://www.oracle.com/security-alerts/cpuoct2020.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"}, {"name": "https://security.netapp.com/advisory/ntap-20200814-0005/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20200814-0005/"}, {"name": "openSUSE-SU-2020:1792", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"}, {"name": "https://www.oracle.com/security-alerts/cpujan2021.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpujan2021.html"}, {"name": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html"}, {"name": "[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - 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Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers."}, {"lang": "es", "value": "Apache HTTP Server versiones 2.4.20 hasta 2.4.43, cuando trace/debug fue habilitado para el m\u00f3dulo HTTP/2 y en determinados patrones de tr\u00e1fico de borde, se hicieron declaraciones de registro en la conexi\u00f3n err\u00f3nea, causando un uso concurrente de grupos de memoria. Configurando el LogLevel de mod_http2 sobre \"info\" mitigar\u00e1 esta vulnerabilidad para los servidores sin parches"}], "id": "CVE-2020-11993", "lastModified": "2026-06-17T02:51:12.620", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": 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"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202008-04"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20200814-0005/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4458-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4757"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujan2021.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-444"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Apache project for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-apr-0:1.6.3-104.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-apr-util-0:1.6.1-75.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-brotli-0:1.0.6-38.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-curl-0:7.64.1-44.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-httpd-0:2.4.37-64.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-jansson-0:2.11-53.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.14-11.Final_redhat_2.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_http2-0:1.15.7-11.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_jk-0:1.2.48-10.redhat_1.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_md-1:2.0.8-30.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_security-0:2.9.2-57.GA.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-nghttp2-0:1.39.2-34.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-openssl-1:1.1.1c-32.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-apr-0:1.6.3-104.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-apr-util-0:1.6.1-75.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-brotli-0:1.0.6-38.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-curl-0:7.64.1-44.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-httpd-0:2.4.37-64.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-jansson-0:2.11-53.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.14-11.Final_redhat_2.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_http2-0:1.15.7-11.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_jk-0:1.2.48-10.redhat_1.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_md-1:2.0.8-30.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_security-0:2.9.2-57.GA.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-nghttp2-0:1.39.2-34.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-openssl-1:1.1.1c-32.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-openssl-chil-0:1.0.0-1.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2021:1809", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "httpd:2.4-8040020210127115317.9f9e2e7e", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHBA-2020:5280", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-22.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-12-01T00:00:00Z"}, {"advisory": "RHBA-2020:5280", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-22.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-12-01T00:00:00Z"}, {"advisory": "RHBA-2020:5280", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-22.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-12-01T00:00:00Z"}, {"advisory": "RHSA-2020:4383", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "httpd", "product_name": "Text-Only JBCS", "release_date": "2020-10-28T00:00:00Z"}], "bugzilla": {"description": "httpd: mod_http2 concurrent pool usage", "id": "1866564", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1866564"}, "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 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers.", "A flaw was found in Apache httpd in versions 2.4.20 to 2.4.43. Logging using the wrong pool by mod_http2 at debug/trace log level may lead to potential crashes and denial of service. The highest threat from this vulnerability is to system availability."], "name": "CVE-2020-11993", "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_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-2020-11993\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-11993\nhttps://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"], "statement": "Red Hat Enterprise Linux 5, 6, and 7 do not ship the vulnerable version of httpd and, thus, are not affected.", "threat_severity": "Moderate"}

{}