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{"affected_release": [{"advisory": "RHSA-2023:5175", "cpe": "cpe:/a:redhat:service_mesh:2.2::el8", "package": "openshift-service-mesh/proxyv2-rhel8:2.2.10-3", "product_name": "Red Hat OpenShift Service Mesh 2.2 for RHEL 8", "release_date": "2023-09-14T00:00:00Z"}, {"advisory": "RHSA-2023:4624", "cpe": "cpe:/a:redhat:service_mesh:2.3::el8", "package": "openshift-service-mesh/proxyv2-rhel8:2.3.6-4", "product_name": "Red Hat OpenShift Service Mesh 2.3 for RHEL 8", "release_date": "2023-08-11T00:00:00Z"}, {"advisory": "RHSA-2023:4625", "cpe": "cpe:/a:redhat:service_mesh:2.4::el8", "package": "openshift-service-mesh/proxyv2-rhel8:2.4.2-7", "product_name": "Red Hat OpenShift Service Mesh 2.4 for RHEL 8", "release_date": "2023-08-11T00:00:00Z"}], "bugzilla": {"description": "envoy: Incorrect handling of HTTP requests and responses with mixed case schemes", "id": "2217985", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2217985"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N", "status": "verified"}, "cwe": "CWE-178", "details": ["Envoy is an open source edge and service proxy designed for cloud-native applications. Envoy allows mixed-case schemes in HTTP/2, however, some internal scheme checks are case-sensitive. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, this can lead to the rejection of requests with mixed-case schemes such as `htTp` or `htTps`, or the bypassing of some requests such as `https` in unencrypted connections. With a fix in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, Envoy will now lowercase scheme values by default, and change the internal scheme checks that were case-sensitive to be case-insensitive. There are no known workarounds for this issue.", "A flaw was found in Envoy that allows for mixed-case schemes in HTTP/2. However, some internal scheme checks in Envoy are case-sensitive, leading to incorrect handling of requests and responses with mixed case schemes. For example, if a request with a mixed scheme HTTP is sent to the OAuth2 filter, it will fail the exact-match checks for HTTP and inform the remote endpoint the scheme is HTTP, thus potentially bypassing OAuth2 checks specific to HTTP requests."], "name": "CVE-2023-35944", "public_date": "2023-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-35944\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-35944"], "threat_severity": "Important", "upstream_fix": "envoy 1.26.3, envoy 1.25.8, envoy 1.24.9, envoy 1.23.11"}