CVE-2021-25877 : Vulnerability Insights and Analysis
Learn about CVE-2021-25877, an insecure file write vulnerability in AVideo/YouPHPTube version 10.0 and earlier. Understand the impact, technical details, and mitigation steps to protect your system.
AVideo/YouPHPTube version 10.0 and prior is impacted by an insecure file write vulnerability. This allows an administrator privileged user to write files on the filesystem using certain variables in the file save.php.
Understanding CVE-2021-25877
This section will cover the details of the CVE-2021-25877 vulnerability, its impacts, technical aspects, and mitigation strategies.
What is CVE-2021-25877?
CVE-2021-25877 is an insecure file write vulnerability in AVideo/YouPHPTube version 10.0 and earlier. It enables an administrator privileged user to write files on the system using flag and code variables in file save.php.
The Impact of CVE-2021-25877
The impact of this vulnerability is that it allows unauthorized users with administrator privileges to write files onto the filesystem, potentially leading to further exploitation and system compromise.
Technical Details of CVE-2021-25877
In this section, we will delve into the technical aspects of the CVE-2021-25877 vulnerability, including its description, affected systems, versions, and exploitation mechanism.
Vulnerability Description
The insecure file write vulnerability in AVideo/YouPHPTube version 10.0 and earlier allows an attacker with administrator privileges to write files on the filesystem using flag and code variables in file save.php.
Affected Systems and Versions
The vulnerability affects AVideo/YouPHPTube version 10.0 and prior.
Exploitation Mechanism
An attacker can exploit this vulnerability by manipulating the flag and code variables in file save.php to write arbitrary files on the system.
Mitigation and Prevention
This section provides guidance on immediate steps to take and long-term security practices to mitigate the CVE-2021-25877 vulnerability.
Immediate Steps to Take
- Update AVideo/YouPHPTube to the latest version to patch the insecure file write vulnerability.
- Restrict administrator privileges to trusted users to minimize the risk of exploitation.
Long-Term Security Practices
- Regularly monitor and audit file read and write activities on the filesystem.
- Implement strict file permissions and access controls to prevent unauthorized write operations.
Patching and Updates
Ensure timely application of security patches and updates released by AVideo/YouPHPTube to address known vulnerabilities, including CVE-2021-25877.