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{"affected_release": [{"advisory": "RHSA-2024:1142", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "haproxy-0:2.4.22-3.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-03-05T00:00:00Z"}, {"advisory": "RHSA-2024:1089", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "haproxy-0:2.4.17-6.el9_2.2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-03-05T00:00:00Z"}, {"advisory": "RHSA-2024:0308", "cpe": "cpe:/a:redhat:openshift:4.11::el8", "package": "haproxy-0:2.2.24-4.rhaos4.11.el8", "product_name": "Red Hat OpenShift Container Platform 4.11", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2024:0200", "cpe": "cpe:/a:redhat:openshift:4.12::el8", "package": "haproxy-0:2.2.24-4.rhaos4.12.el8", "product_name": "Red Hat OpenShift Container Platform 4.12", "release_date": "2024-01-17T00:00:00Z"}, {"advisory": "RHSA-2023:7606", "cpe": "cpe:/a:redhat:openshift:4.13::el8", "package": "haproxy-0:2.2.24-4.rhaos4.13.el8", "product_name": "Red Hat OpenShift Container Platform 4.13", "release_date": "2023-12-06T00:00:00Z"}, {"advisory": "RHSA-2023:7473", "cpe": "cpe:/a:redhat:openshift:4.14::el8", "package": "haproxy-0:2.6.13-2.rhaos4.14.el8", "product_name": "Red Hat OpenShift Container Platform 4.14", "release_date": "2023-11-29T00:00:00Z"}], "bugzilla": {"description": "haproxy: Proxy forwards malformed empty Content-Length headers", "id": "2231370", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2231370"}, "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-20", "details": ["HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret the payload as an extra request.", "A flaw was found in HAProxy. Empty Content-Length headers are forwarded, which could cause an HTTP/1 server behind it to interpret the payload as an extra request. This may render the HTTP/1 server vulnerable to attacks in some uncommon cases."], "mitigation": {"lang": "en:us", "value": "This flaw can be mitigated by applying a rule to explicitly reject any requests with an empty Content-Lenght header. The following line can be added to any frontend configurations at the /etc/haproxy/haproxy.cfg file.  \n~~~\nhttp-request deny if { hdr_len(content-length) 0 }\n~~~"}, "name": "CVE-2023-40225", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:2", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Cryostat 2"}, {"cpe": "cpe:/a:redhat:ceph_storage:5", "fix_state": "Affected", "package_name": "haproxy", "product_name": "Red Hat Ceph Storage 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "haproxy", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:openshift:3.11", "fix_state": "Out of support scope", "package_name": "haproxy", "product_name": "Red Hat OpenShift Container Platform 3.11"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Will not fix", "package_name": "rh-haproxy18-haproxy", "product_name": "Red Hat Software Collections"}], "public_date": "2023-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-40225\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-40225"], "threat_severity": "Moderate"}