ghsa-4v7x-pqxf-cx7m
Vulnerability from github
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" }
Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.