CVE-2020-36193 : Security Advisory and Response
Learn about CVE-2020-36193, a vulnerability in Tar.php through 1.4.11 enabling Directory Traversal attacks. Find out how to mitigate the risk and secure affected systems.
Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.
Understanding CVE-2020-36193
Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.
What is CVE-2020-36193?
CVE-2020-36193 is a vulnerability in Tar.php in Archive_Tar through version 1.4.11 that permits write operations with Directory Traversal due to insufficient validation of symbolic links.
The Impact of CVE-2020-36193
This vulnerability could be exploited by attackers to perform unauthorized write operations on the file system, potentially leading to the manipulation or deletion of critical files and directories.
Technical Details of CVE-2020-36193
Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links.
Vulnerability Description
The vulnerability in Tar.php allows attackers to conduct write operations with Directory Traversal, posing a risk of unauthorized file system modifications.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions: All versions up to and including 1.4.11 are affected.
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging inadequate validation of symbolic links to traverse directories and perform unauthorized write operations.
Mitigation and Prevention
Immediate Steps to Take:
- Update Archive_Tar to the latest version to mitigate the vulnerability.
- Implement proper input validation and sanitization to prevent Directory Traversal attacks.
Long-Term Security Practices
- Regularly monitor and audit file system changes to detect unauthorized modifications.
- Educate developers on secure coding practices to prevent similar vulnerabilities in the future.
Patching and Updates
- Apply security patches promptly to address known vulnerabilities and enhance system security.