CVE-2021-26558 : Security Advisory and Response

This CVE-2021-26558 article provides insights into the Deserialization of Untrusted Data vulnerability affecting Apache ShardingSphere-UI, its impact, technical details, and mitigation steps.

Understanding CVE-2021-26558

This section delves into the details of the vulnerability and its implications.

What is CVE-2021-26558?

The vulnerability involves the ability of an attacker to inject outer link resources due to improper deserialization of untrusted data in Apache ShardingSphere-UI versions 4.1.1 and later, up to version 5.0.0.

The Impact of CVE-2021-26558

The impact of this vulnerability is categorized as low risk, however, it can potentially lead to unauthorized access and injection attacks.

Technical Details of CVE-2021-26558

This section outlines the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability stems from the improper handling of deserializing untrusted data, allowing attackers to inject malicious external resources.

Affected Systems and Versions

Apache ShardingSphere-UI versions 4.1.1 and up to 5.0.0 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious data through deserialization mechanisms.

Mitigation and Prevention

Here, you will find information on how to mitigate and prevent exploitation of the CVE-2021-26558 vulnerability.

Immediate Steps to Take

If you do not deploy the ShardingSphere-UI project, upgrading may not be necessary. However, if using the project, consider upgrading to a secure version.

Long-Term Security Practices

Regularly update and monitor the Apache ShardingSphere-UI to ensure protection against potential vulnerabilities.

Patching and Updates

Stay informed about security patches and updates released by Apache Software Foundation to address known vulnerabilities.