CVE-2020-5811 Explained : Impact and Mitigation
Learn about CVE-2020-5811, an authenticated path traversal vulnerability in Umbraco CMS <= 8.9.1 or current versions, allowing unauthorized file writes outside intended directories.
An authenticated path traversal vulnerability exists during package installation in Umbraco CMS <= 8.9.1 or current, allowing arbitrary files to be written outside of the site home and expected paths.
Understanding CVE-2020-5811
This CVE involves a path traversal vulnerability in Umbraco CMS that could lead to unauthorized file writes.
What is CVE-2020-5811?
CVE-2020-5811 is an authenticated path traversal vulnerability in Umbraco CMS versions <= 8.9.1 or current, potentially resulting in the writing of arbitrary files outside of intended directories during package installation.
The Impact of CVE-2020-5811
This vulnerability could be exploited by an authenticated attacker to write files outside of the expected paths, potentially leading to unauthorized access or manipulation of sensitive data.
Technical Details of CVE-2020-5811
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows an authenticated attacker to perform path traversal during package installation, enabling the writing of files outside of the intended directories.
Affected Systems and Versions
- Product: Umbraco CMS
- Versions affected: <= 8.9.1 or current (unfixed)
Exploitation Mechanism
The vulnerability is exploited during the installation of Umbraco packages, where an attacker can manipulate paths to write files outside of the designated directories.
Mitigation and Prevention
Protect your systems from CVE-2020-5811 with these mitigation strategies.
Immediate Steps to Take
- Apply security patches or updates provided by Umbraco CMS promptly.
- Monitor package installations for any suspicious activities.
- Restrict access to sensitive directories to authorized personnel only.
Long-Term Security Practices
- Conduct regular security assessments and audits to identify vulnerabilities.
- Educate users on secure package installation practices.
- Implement access controls and least privilege principles to limit exposure to vulnerabilities.
Patching and Updates
Ensure that your Umbraco CMS is regularly updated with the latest security patches to mitigate the risk of exploitation.