{"schema_version":"1.7.3","id":"BIT-golang-2023-45288","published":"2024-04-06T18:19:39.789Z","modified":"2026-01-28T03:41:07.760588Z","aliases":["CVE-2023-45288","GHSA-4v7x-pqxf-cx7m","GO-2024-2687"],"summary":"HTTP/2 CONTINUATION flood in net/http","details":"An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.","affected":[{"package":{"name":"golang","ecosystem":"Bitnami","purl":"pkg:bitnami/golang"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.21.9"},{"introduced":"1.22.0-0"},{"fixed":"1.22.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2023-45288.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"references":[{"type":"WEB","url":"https://go.dev/cl/576155"},{"type":"WEB","url":"https://go.dev/issue/65051"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/YgW0sx8mN3M"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2024-2687"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20240419-0009/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYFHIQ6XRKRYBI2F5UESH67BJBQXUPT/"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2024/04/03/16"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2024/04/05/4"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45288"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/421644"}],"database_specific":{"cpes":["cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"],"severity":"High"}}