ghsa-4v7x-pqxf-cx7m
Vulnerability from github
Published
2024-04-04 21:30
Modified
2024-05-02 18:59
Severity
Summary
net/http, x/net/http2: close connections when receiving too many headers
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": {
"ecosystem": "Go",
"name": "net/http"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.21.9"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "golang.org/x/net/http2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.23.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "net/http"
},
"ranges": [
{
"events": [
{
"introduced": "1.22.0-0"
},
{
"fixed": "1.22.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "golang.org/x/net"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.23.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-45288"
],
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2024-04-04T23:02:57Z",
"nvd_published_at": "2024-04-04T21:15:16Z",
"severity": "MODERATE"
},
"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\u0027s 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.",
"id": "GHSA-4v7x-pqxf-cx7m",
"modified": "2024-05-02T18:59:04Z",
"published": "2024-04-04T21:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45288"
},
{
"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://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYFHIQ6XRKRYBI2F5UESH67BJBQXUPT"
},
{
"type": "WEB",
"url": "https://nowotarski.info/http2-continuation-flood-technical-details"
},
{
"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": "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"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "net/http, x/net/http2: close connections when receiving too many headers"
}
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