CVE-2021-27341 Explained : Impact and Mitigation
Learn about CVE-2021-27341 affecting OpenSIS Community Edition <= 7.6. Understand the impact, technical details, and mitigation steps for this local file inclusion vulnerability.
OpenSIS Community Edition version <= 7.6 is affected by a local file inclusion vulnerability in DownloadWindow.php via the "filename" parameter.
Understanding CVE-2021-27341
This CVE identifies a local file inclusion vulnerability in OpenSIS Community Edition version <= 7.6 that can be exploited via the "filename" parameter.
What is CVE-2021-27341?
CVE-2021-27341 refers to a security flaw in OpenSIS Community Edition version <= 7.6 that allows an attacker to include local files through the vulnerable DownloadWindow.php file using the "filename" parameter.
The Impact of CVE-2021-27341
This vulnerability could lead to unauthorized access to sensitive files on the system, potentially exposing confidential information or enabling further attacks.
Technical Details of CVE-2021-27341
In this section, we will delve into the specific technical aspects of CVE-2021-27341.
Vulnerability Description
The vulnerability in DownloadWindow.php allows threat actors to include arbitrary local files, posing a risk of unauthorized data access.
Affected Systems and Versions
OpenSIS Community Edition versions up to 7.6 are impacted by this vulnerability, potentially affecting systems running these versions.
Exploitation Mechanism
By manipulating the "filename" parameter in DownloadWindow.php, attackers can traverse the file system and access unauthorized local files.
Mitigation and Prevention
To secure systems from CVE-2021-27341, immediate actions and long-term security measures are crucial.
Immediate Steps to Take
It is recommended to apply patches provided by OpenSIS to mitigate the vulnerability. Ensure that sensitive files are not accessible through the "filename" parameter.
Long-Term Security Practices
Implement strong input validation mechanisms, restrict file system access, and regularly update OpenSIS to prevent security vulnerabilities.
Patching and Updates
Stay updated with OpenSIS security advisories and promptly apply patches to address known vulnerabilities and enhance system security.