CVE-2021-43564 : Exploit Details and Defense Strategies
Discover the impact of CVE-2021-43564, a TYPO3 jobfair extension vulnerability allowing unauthorized download of sensitive files. Learn how to mitigate and prevent this issue.
An issue was discovered in the jobfair (aka Job Fair) extension before 1.0.13 and 2.x before 2.0.2 for TYPO3 allowing unauthenticated users to download sensitive files.
Understanding CVE-2021-43564
What is CVE-2021-43564?
This CVE describes a vulnerability in the jobfair extension for TYPO3 that enables unauthenticated users to access sensitive files by guessing filenames.
The Impact of CVE-2021-43564
Unauthenticated users can download files containing sensitive data by directly guessing the filenames of uploaded files.
Technical Details of CVE-2021-43564
Vulnerability Description
The jobfair extension in TYPO3 fails to protect or obfuscate filenames of uploaded files, leading to unauthorized access.
Affected Systems and Versions
- Affected versions include jobfair extension before 1.0.13 and 2.x before 2.0.2 for TYPO3.
Exploitation Mechanism
- Attackers can exploit this vulnerability by simply guessing the filename of files uploaded.
Mitigation and Prevention
Immediate Steps to Take
- Update the jobfair extension to version 1.0.13 or 2.0.2 to mitigate the issue.
- Regularly monitor file access logs for suspicious activities.
Long-Term Security Practices
- Implement access controls to restrict file download permissions.
- Educate users on secure file uploading practices.
Patching and Updates
- Apply patches and updates provided by TYPO3 to address this vulnerability.