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{"affected_release": [{"advisory": "RHSA-2022:7143", "cpe": "cpe:/a:redhat:jboss_core_services:1::el8", "package": "jbcs-httpd24-httpd-0:2.4.51-28.el8jbcs", "product_name": "JBoss Core Services for RHEL 8", "release_date": "2022-10-26T00:00:00Z"}, {"advisory": "RHSA-2022:7143", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-httpd-0:2.4.51-28.el7jbcs", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2022-10-26T00:00:00Z"}, {"advisory": "RHSA-2022:1915", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "httpd:2.4-8060020220321163517.d63f516d", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}, {"advisory": "RHSA-2022:6753", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "httpd24-httpd-0:2.4.34-23.el7.5", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2022-09-29T00:00:00Z"}, {"advisory": "RHSA-2022:7144", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "httpd", "product_name": "Text-Only JBCS", "release_date": "2022-10-26T00:00:00Z"}], "bugzilla": {"description": "httpd: Request splitting via HTTP/2 method injection and mod_proxy", "id": "1966728", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1966728"}, "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:H/A:N", "status": "verified"}, "cwe": "CWE-476", "details": ["A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.", "A NULL pointer dereference was found in Apache httpd mod_h2. The highest threat from this flaw is to system integrity."], "mitigation": {"lang": "en:us", "value": "This flaw can be mitigated by disabling HTTP/2. More information available at: https://httpd.apache.org/docs/2.4/mod/mod_http2.html"}, "name": "CVE-2021-33193", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "httpd", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:6", "fix_state": "Not affected", "package_name": "httpd22", "product_name": "Red Hat JBoss Enterprise Application Platform 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:2", "fix_state": "Not affected", "package_name": "httpd22", "product_name": "Red Hat JBoss Enterprise Web Server 2"}], "public_date": "2021-08-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-33193\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-33193\nhttps://portswigger.net/research/http2"], "threat_severity": "Moderate"}