SB2019011516 - Code Injection in PrestaShop

Description

This security bulletin contains information about 1 security vulnerability.

1) Code Injection (CVE-ID: CVE-2018-20717)

The vulnerability allows a remote authenticated user to execute arbitrary code.

In the orders section of PrestaShop before 1.7.2.5, an attack is possible after gaining access to a target store with a user role with the rights of at least a Salesman or higher privileges. The attacker can then inject arbitrary PHP objects into the process and abuse an object chain in order to gain Remote Code Execution. This occurs because protection against serialized objects looks for a 0: followed by an integer, but does not consider 0:+ followed by an integer.

Remediation

Install update from vendor's website.

References

• https://blog.ripstech.com/2018/prestashop-remote-code-execution/
• https://build.prestashop.com/news/prestashop-1-7-2-5-maintenance-release/