サンプル
Prove that net/http keeps the Authorization header stripped through the full redirect chain after a cross-domain hop, and does not restore it on a subsequent same-domain redirect (CVE-2024-45336).
sha256:ca2c5fb0a4c0366c9e1e2ca07cd75ca1c776ff2e9eab90fc258851b1d37fefe6
PUBLISHED
L3_CONTRACT_PASS
MIT-0
ケース
- ゴール
- Prove that net/http keeps the Authorization header stripped through the full redirect chain after a cross-domain hop, and does not restore it on a subsequent same-domain redirect (CVE-2024-45336). HOW
- パッケージ
- net/http go1.26.5
- 環境
- go
- 作成日
- 2026-08-16T14:53:27Z
よくある思い込み
Once net/http drops Authorization for a cross-domain redirect, the header stays absent for the rest of the chain — but before go1.23.7 / go1.24.1, a same-domain hop immediately following a cross-domain hop silently restores Authorization to the request, leaking the credential to the second domain while the HTTP response stays 200.
このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。
コントラクト
- After a three-hop redirect chain where the first cross-domain hop strips Authorization, the Authorization header must be absent at the same-domain second hop on serverB — before go1.23.7 / go1.24.1 this assertion fails silently with a 200 response.
- net/http does not restore Authorization on a same-domain redirect that follows a cross-domain redirect.
ファイル
- NOTES.md
- csx.json
- go.mod
- redirect_header_test.go
検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列
オリジンシーダー
検証レシート
- go 1.26 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-16 · ed25519:d91480838ac982c9