cve/2023/CVE-2023-42818.md

### [CVE-2023-42818](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42818)
![](https://img.shields.io/static/v1?label=Product&message=jumpserver&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D%203.6.0%2C%20%3C%203.6.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-287%3A%20Improper%20Authentication&color=brighgreen)

### Description

JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds