CVE-2023-47102 : Vulnerability Insights and Analysis

UrBackup Server 2.5.31 allows brute-force enumeration of user accounts due to a vulnerability that confirms the validity of a username through a failure message. This CVE entry was published on November 7, 2023.

Understanding CVE-2023-47102

This section will delve into the details of CVE-2023-47102, highlighting its impact, technical information, and mitigation strategies.

What is CVE-2023-47102?

CVE-2023-47102 relates to UrBackup Server 2.5.31, where an attacker can perform brute-force attacks to enumerate user accounts by exploiting a flaw that provides confirmation of invalid usernames.

The Impact of CVE-2023-47102

The impact of this vulnerability is significant as it allows malicious actors to gather valid user account information through brute-force techniques, compromising the security of the UrBackup Server.

Technical Details of CVE-2023-47102

Exploring the vulnerability, affected systems, and exploitation mechanisms to better understand the implications of CVE-2023-47102.

Vulnerability Description

The vulnerability in UrBackup Server 2.5.31 enables attackers to iteratively guess valid usernames by receiving confirmation of an invalid username, aiding in unauthorized account enumeration.

Affected Systems and Versions

All instances of UrBackup Server version 2.5.31 are affected by this vulnerability, potentially leaving user accounts exposed to brute-force attacks.

Exploitation Mechanism

By leveraging the flaw in UrBackup Server, threat actors can automate the process of determining valid user accounts through repetitive login attempts and confirming non-existent usernames.

Mitigation and Prevention

To safeguard against CVE-2023-47102, immediate steps should be taken along with implementing long-term security measures and timely patching.

Immediate Steps to Take

Administrators are advised to restrict access to the UrBackup Server, implement account lockout policies, and monitor for suspicious login activities to mitigate the risk of brute-force attacks.

Long-Term Security Practices

Enhancing password complexity requirements, conducting regular security assessments, and educating users on secure login practices can fortify the resilience of UrBackup Server against similar vulnerabilities.

Patching and Updates

It is crucial to stay informed about security patches released by UrBackup Server and promptly apply updates to address CVE-2023-47102 and other known vulnerabilities.