SB2018112314 - PHP code execution in phpBB
Published: November 23, 2018
Security Bulletin ID
SB2018112314
Severity
Low
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) Phar deserialization (CVE-ID: CVE-2018-19274)
The vulnerability allows a remote attacker with administrator privileges to execute arbitrary PHP code.The weakness exists in a feature that utilizes an image editor binary called Imagick due to Phar deserialization if user input is passed unsanitized to any file system function in PHP, such as
file_exists(). A remote attacker with access to the Admin Control Panel with founder permissions can upload a malicious image file and edit it with Imagick to execute arbitrary PHP code on the underlying server and then to perform a full site takeover.Remediation
Install update from vendor's website.