Improper Authentication in JumpServer - CVE-2023-43652
Published: September 27, 2023 / Updated: April 27, 2026
Vulnerability identifier: #VU128134
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-43652
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
JumpServer
JumpServer
Software vendor:
JumpServer
JumpServer
Description
The vulnerability allows a remote attacker to gain access to the current user's information and authorized actions.
The vulnerability exists due to improper authentication in the authentication token API for the KoKo component when handling SSH public key login validation requests. A remote attacker can submit a username and a leaked SSH public key to gain access to the current user's information and authorized actions.
The API does not verify the source of requests before generating a personal authentication token.
Remediation
Install security update from vendor's website.