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{"acknowledgement": "Red Hat would like to thank the Envoy security team for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:1322", "cpe": "cpe:/a:redhat:service_mesh:1.1::el8", "package": "servicemesh-proxy-0:1.1.13-1.el8", "product_name": "OpenShift Service Mesh 1.1", "release_date": "2021-04-22T00:00:00Z"}, {"advisory": "RHSA-2021:1324", "cpe": "cpe:/a:redhat:service_mesh:2.0::el8", "package": "servicemesh-proxy-0:2.0.3-1.el8", "product_name": "OpenShift Service Mesh 2.0", "release_date": "2021-04-22T00:00:00Z"}], "bugzilla": {"description": "envoyproxy/envoy: crash with empty HTTP/2 metadata map", "id": "1942280", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1942280"}, "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-476", "details": ["An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.", "A flaw was found in envoyproxy. An attacker, able to craft an HTTP2 request that specifies an empty metadata map, can crash envoy resulting in a denial of service due to the null reference. The highest threat from this vulnerability is to system availability."], "name": "CVE-2021-29258", "public_date": "2021-04-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-29258\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-29258\nhttps://github.com/envoyproxy/envoy/blob/main/source/docs/h2_metadata.md\nhttps://istio.io/latest/news/security/istio-security-2021-003/"], "threat_severity": "Important"}