ExploitCVE-2024-7863
Cross-Site Request Forgery (CSRF) (CWE-352)
Summary
The Favicon Generator (CLOSED) WordPress plugin before version 2.1 contains two critical security vulnerabilities: 1. Lack of file validation for uploads 2. Absence of CSRF (Cross-Site Request Forgery) checks These vulnerabilities affect the plugin's file upload functionality, potentially allowing malicious actors to upload arbitrary files, including PHP files, to the server. This issue affects versions of the plugin prior to 2.1.
Impact
The impact of this vulnerability is severe: 1. Arbitrary File Upload: Attackers can exploit the lack of file validation to upload malicious files, such as PHP scripts, directly to the server. 2. Remote Code Execution: Successfully uploaded PHP files could be executed on the server, potentially leading to complete server compromise. 3. Unauthorized Actions: The absence of CSRF protection means attackers could trick authenticated administrators into performing unintended actions, such as uploading malicious files without their knowledge. 4. Data Breach: Compromised servers could lead to unauthorized access to sensitive information, including user data and database contents. 5. Website Defacement: Attackers could manipulate or replace legitimate website content. 6. Malware Distribution: The compromised server could be used to host and distribute malware to site visitors. Given that this plugin is related to favicon generation, a core visual element of websites, the potential for widespread exploitation across multiple WordPress sites is significant.
Exploitation
One proof-of-concept exploit is available on wpscan.com. There is no evidence of proof of exploitation at the moment.
Patch
A patch is available. The vulnerability has been addressed in version 2.1 of the Favicon Generator (CLOSED) WordPress plugin. Users should immediately update to this version or later to mitigate the risk.
Mitigation
To mitigate this vulnerability, the following actions are recommended: 1. Immediate Update: Update the Favicon Generator (CLOSED) WordPress plugin to version 2.1 or later as soon as possible. 2. Plugin Removal: If immediate updating is not possible, consider temporarily disabling or removing the plugin until it can be updated. 3. File Integrity Check: Conduct a thorough review of all files on the server, especially those in the WordPress uploads directory, to identify any potentially malicious files that may have been uploaded. 4. Access Logs Review: Analyze server access logs for any suspicious activities or unexpected file uploads. 5. WordPress Core Update: Ensure that WordPress core and all other plugins are up-to-date to minimize overall attack surface. 6. Implement Web Application Firewall (WAF): Consider using a WAF to provide an additional layer of protection against file upload vulnerabilities and CSRF attacks. 7. Principle of Least Privilege: Review and restrict administrative access to only necessary personnel. 8. Regular Security Audits: Implement a routine security audit process to identify and address vulnerabilities promptly. Given the high severity of this vulnerability, it is crucial to prioritize these mitigation efforts, especially for sites running versions of the Favicon Generator (CLOSED) plugin prior to 2.1.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Timeline
Feedly found the first article mentioning CVE-2024-7863. See article
Feedly estimated the CVSS score as HIGH
NVD published the first details for CVE-2024-7863
A CVSS base score of 8.1 has been assigned.
EPSS Score was set to: 0.04% (Percentile: 9.6%)
A CVSS base score of 6.8 has been assigned.