CVE-2020-36630 : What You Need to Know
Discover the critical SQL injection vulnerability (CVE-2020-36630) in FreePBX cdr 14.0, allowing attackers to manipulate 'limit/offset' arguments for unauthorized database access. Learn mitigation steps and patching details.
This CVE-2020-36630 article provides insights into a critical SQL injection vulnerability found in FreePBX cdr 14.0, affecting the ajaxHandler function of the file ucp/Cdr.class.php.
Understanding CVE-2020-36630
This section delves into the details of the vulnerability and its impact.
What is CVE-2020-36630?
CVE-2020-36630 is a critical SQL injection vulnerability discovered in FreePBX cdr 14.0, specifically affecting the ajaxHandler function of the file ucp/Cdr.class.php. This vulnerability allows attackers to manipulate the 'limit/offset' argument, leading to SQL injection.
The Impact of CVE-2020-36630
The vulnerability has been classified as critical due to its potential to allow unauthorized SQL injection attacks, compromising the integrity and confidentiality of the affected system.
Technical Details of CVE-2020-36630
This section provides technical details of the vulnerability, including affected systems, exploitation mechanism, and mitigation strategies.
Vulnerability Description
The vulnerability in FreePBX cdr 14.0 arises from improper handling of user-supplied data in the 'limit/offset' argument within the ajaxHandler function of the file ucp/Cdr.class.php, enabling SQL injection attacks.
Affected Systems and Versions
- Vendor: FreePBX
- Product: cdr
- Affected Version: 14.0
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the 'limit/offset' argument with malicious SQL queries, potentially gaining unauthorized access to the database and executing arbitrary commands.
Mitigation and Prevention
This section outlines immediate steps and long-term security practices to mitigate the CVE-2020-36630 vulnerability.
Immediate Steps to Take
- Upgrade the affected FreePBX cdr component to version 14.0.5.21 to address the SQL injection vulnerability.
- Apply the patch identified as f1a9eea2dfff30fb99d825bac194a676a82b9ec8 to secure the system.
Long-Term Security Practices
- Regularly update software components to the latest versions to patch known vulnerabilities.
- Implement input validation and parameterized queries to prevent SQL injection attacks.
Patching and Updates
Refer to the provided patch links to download and apply the necessary updates to secure the FreePBX cdr component.