SB2021012410 - Remote code execution in Backdrop CMS
Published: January 24, 2021 Updated: October 27, 2022
Security Bulletin ID
SB2021012410
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) UNIX symbolic link following (CVE-ID: CVE-2020-36193)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a symlink following issue in tar.php file in Archive_Tar. A remote attacker can pass specially crafted archive to the application and force the application to overwrite arbitrary files on the system using directory traversal sequences.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
Remediation
Install update from vendor's website.