CVE-2021-26634 : Exploit Details and Defense Strategies

SQL injection and file upload attacks are possible due to insufficient validation of input values in some parameters and variables of files compromising Maxboard, which may lead to arbitrary code execution or privilege escalation. Attackers can use these vulnerabilities to perform attacks such as stealing server management rights using a web shell.

Understanding CVE-2021-26634

This CVE involves multiple vulnerabilities in Maxboard, specifically related to SQL injection and file upload attacks due to lack of input validation.

What is CVE-2021-26634?

CVE-2021-26634 refers to the vulnerabilities present in Maxboard that can be exploited by attackers to conduct SQL injection and file upload attacks. These vulnerabilities arise from inadequate validation of input values.

The Impact of CVE-2021-26634

The impact of CVE-2021-26634 is critical, with the potential for arbitrary code execution or privilege escalation. Attackers can leverage these vulnerabilities to compromise server security and gain unauthorized access.

Technical Details of CVE-2021-26634

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerabilities in Maxboard allow for SQL injection and file upload attacks by exploiting insufficient validation of input parameters and variables.

Affected Systems and Versions

Maxboard versions up to and including 1.9.5.1 on Linux platforms are affected by these vulnerabilities.

Exploitation Mechanism

Attackers can exploit these vulnerabilities to execute arbitrary code or escalate privileges, potentially leading to severe consequences.

Mitigation and Prevention

Protecting systems from CVE-2021-26634 requires immediate action and long-term security measures.

Immediate Steps to Take

Users should apply patches and updates provided by the vendor to mitigate the vulnerabilities. Additionally, input validation mechanisms should be strengthened.

Long-Term Security Practices

Implementing secure coding practices, regularly updating software, and conducting security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly monitor for security advisories from the vendor and promptly apply patches to ensure the system remains secure.