CVE-2023-37477

An OS command injection vulnerability exists in 1Panel firewall functionality. A specially-crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Details

1Panel firewall functionality /hosts/firewall/ip endpoint read user input without validation, the attacker extends the default functionality of the application, which execute system commands.

PoC

the payload ; sleep 3 # will lead server response in 3 seconds

the payload ; sleep 6 # will lead server response in 6 seconds

Workarounds

It is recommended to upgrade the version to v1.4.3.

References

If you have any questions or comments about this advisory:

Open an issue in https://github.com/1Panel-dev/1Panel
Email us at [email protected]

An attacker can execute arbitrary code on the target system, which can lead to a complete compromise of the system.

Untrusted input reaches a shell command, allowing arbitrary commands to run on the host. Typical impact: code execution in the application's environment.

CVE-2023-37477 has a CVSS score of 8.8 (High). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.4.3); upgrading removes the vulnerable code path.

Kodem intelligence

The vulnerability has been fixed in v1.4.3.

1. What is CVE-2023-37477? CVE-2023-37477 is a high-severity OS command injection vulnerability in github.com/1Panel-dev/1Panel (go), affecting versions <= 1.4.2. It is fixed in 1.4.3. Untrusted input reaches a shell command, allowing arbitrary commands to run on the host.
2. How severe is CVE-2023-37477? CVE-2023-37477 has a CVSS score of 8.8 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of github.com/1Panel-dev/1Panel are affected by CVE-2023-37477? github.com/1Panel-dev/1Panel (go) versions <= 1.4.2 is affected.
4. Is there a fix for CVE-2023-37477? Yes. CVE-2023-37477 is fixed in 1.4.3. Upgrade to this version or later.
5. Is CVE-2023-37477 exploitable, and should I be worried? Whether CVE-2023-37477 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2023-37477 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2023-37477? Upgrade github.com/1Panel-dev/1Panel to 1.4.3 or later.