CVE-2020-35939 : Exploit Details and Defense Strategies
Learn about CVE-2020-35939 involving PHP object injection vulnerabilities in the Team Showcase plugin for WordPress. Understand the impact, technical details, and mitigation steps.
PHP Object injection vulnerabilities in the Team Showcase plugin before 1.22.16 for WordPress allow remote authenticated attackers to inject arbitrary PHP objects due to insecure unserialization of data supplied in a remotely hosted crafted payload in the source parameter via AJAX. The action must be set to team_import_xml_layouts.
Understanding CVE-2020-35939
This CVE involves PHP object injection vulnerabilities in the Team Showcase plugin for WordPress, potentially enabling remote attackers to inject malicious PHP objects.
What is CVE-2020-35939?
CVE-2020-35939 refers to PHP object injection vulnerabilities in the Team Showcase plugin before version 1.22.16 for WordPress, allowing remote authenticated attackers to inject arbitrary PHP objects.
The Impact of CVE-2020-35939
The impact of this vulnerability is rated as HIGH, with a CVSS base score of 7.5. It affects confidentiality, integrity, and availability, with a low level of privileges required for exploitation.
Technical Details of CVE-2020-35939
This section provides more in-depth technical details of the CVE.
Vulnerability Description
The vulnerability arises from insecure unserialization of data supplied in a remotely hosted crafted payload in the source parameter via AJAX, with the action set to team_import_xml_layouts.
Affected Systems and Versions
- Affected System: Team Showcase plugin for WordPress
- Affected Versions: Before 1.22.16
Exploitation Mechanism
The vulnerability can be exploited by remote authenticated attackers injecting arbitrary PHP objects through the insecure unserialization of data.
Mitigation and Prevention
Protecting systems from CVE-2020-35939 requires immediate steps and long-term security practices.
Immediate Steps to Take
- Update the Team Showcase plugin to version 1.22.16 or newer.
- Monitor and restrict access to the affected plugin.
- Implement strict input validation and output encoding.
Long-Term Security Practices
- Regularly update all plugins and software to the latest versions.
- Conduct security audits and penetration testing to identify vulnerabilities.
Patching and Updates
- Apply patches and security updates promptly to mitigate the risk of exploitation.