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MEDIUM6.4

GHSA-4r5x-x283-wm96

Jumpserver Koko vulnerable to remote code execution on the host system via MongoDB shell

Quick fix

GHSA-4r5x-x283-wm96 — github.com/jumpserver/koko: upgrade to the fixed version with the command below.

go get github.com/jumpserver/koko@v2.28.20

Details

### Impact

An authenticated user can exploit a vulnerability in MongoDB sessions to execute arbitrary commands, leading to remote code execution. This vulnerability may further be leveraged to gain root privileges on the host system.

### Details Through the WEB CLI interface provided by koko, a user logs into the authorized mongoDB database and exploits the MongoDB session to execute arbitrary commands.

``` admin> const { execSync } = require("child_process") admin> console.log(execSync("id; hostname;").toString()) uid=0(root) gid=0(root) groups=0(root) jms_koko admin> ```

### Patches Safe versions: - v2.28.20 - v3.7.1

### Workarounds It is recommended to upgrade the safe versions.

After upgrade, you can use the same method to check whether the vulnerability is fixed. ``` admin> console.log(execSync("id; hostname;").toString()) /bin/sh: line 1: /bin/hostname: Permission denied ```

### References Thanks for **Oskar Zeino-Mahmalat** of [Sonar](https://sonarsource.com/) found and report this vulnerability

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/jumpserver/koko
Introduced in: 2.0.0Fixed in: 2.28.20
Fixgo get github.com/jumpserver/koko@v2.28.20
Go/github.com/jumpserver/koko
Introduced in: 3.0.0Fixed in: 3.7.1
Fixgo get github.com/jumpserver/koko@v3.7.1

References