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CVE-2023-46123 : Security Advisory and Response

Discover the impact, technical details, and mitigation steps for CVE-2023-46123, a vulnerability in jumpserver enabling password brute-force bypass via arbitrary IP values.

This article provides an overview of CVE-2023-46123, a vulnerability in the jumpserver that allows for password brute-force protection bypass via arbitrary IP values.

Understanding CVE-2023-46123

CVE-2023-46123 is a security vulnerability in the jumpserver that enables attackers to bypass password brute-force protection by spoofing arbitrary IP addresses, allowing for unlimited password attempts.

What is CVE-2023-46123?

CVE-2023-46123 is a flaw in the Core API of jumpserver that permits attackers to circumvent password brute-force protection mechanisms by manipulating their apparent IP address.

The Impact of CVE-2023-46123

The impact of CVE-2023-46123 is significant as it can lead to unauthorized access to sensitive information or systems due to the ability to perform unlimited password attempts.

Technical Details of CVE-2023-46123

The vulnerability has been assigned a CVSS base score of 5.3 (Medium severity) with a vector string of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. It affects jumpserver versions prior to 3.8.0.

Vulnerability Description

jumpserver is an open-source bastion machine and security audit system that allows attackers to bypass password brute-force protection by altering IP addresses, enabling unlimited password attempts.

Affected Systems and Versions

The vulnerability impacts jumpserver versions below 3.8.0.

Exploitation Mechanism

By spoofing arbitrary IP addresses, attackers can exploit the vulnerability in the Core API of jumpserver to bypass password brute-force protection mechanisms.

Mitigation and Prevention

To address CVE-2023-46123, users are advised to take immediate steps for mitigation and implement long-term security practices.

Immediate Steps to Take

Update jumpserver to version 3.8.0 or newer to patch the vulnerability and prevent unauthorized access via password brute-force attacks.

Long-Term Security Practices

Users should regularly monitor for security advisories and keep software up to date to prevent similar vulnerabilities in the future.

Patching and Updates

Ensure timely installation of security patches provided by jumpserver to address known vulnerabilities and enhance system security.

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