CVE-2023-2017: Improper Control of Generation of Code in Twig Rendered Views in Shopware
Impact We fixed with CVE-2023-22731 Twig filters to only be executed with allowed functions. It is possible to pass PHP Closures as string or an array and array crafted PHP Closures was not checked against allow list
Patches The problem has been fixed with 6.4.20.1 with an improved override.
Workarounds For older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version.
Other sources
Server-side Template Injection (SSTI) in Shopware 6 (<= v6.4.20.0, v6.5.0.0-rc1 <= v6.5.0.0-rc4), affecting both shopware/core and shopware/platform GitHub repositories, allows remote attackers with access to a Twig environment without the Sandbox extension to bypass the validation checks in Shopware\Core\Framework\Adapter\Twig\SecurityExtension and call any arbitrary PHP function and thus execute arbitrary code/commands via usage of fully-qualified names, supplied as array of strings, when referencing callables. Users are advised to upgrade to v6.4.20.1 to resolve this issue. This is a bypass of CVE-2023-22731.
— MITRE
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2023-2017?
The severity of CVE-2023-2017 is high with a CVSS score of 8.8.
Which software versions are affected by CVE-2023-2017?
Shopware versions <= v6.4.20.0, v6.5.0.0-rc1 <= v6.5.0.0-rc4 are affected by CVE-2023-2017.
How can remote attackers exploit CVE-2023-2017?
Remote attackers with access to a Twig environment without the Sandbox extension can exploit CVE-2023-2017 to bypass validation checks in Shopware.
Is there a security update available for CVE-2023-2017?
Yes, there is a security update available for CVE-2023-2017. More information can be found in the official documentation and advisories.
What is the Common Weakness Enumeration (CWE) ID associated with CVE-2023-2017?
The Common Weakness Enumeration (CWE) IDs associated with CVE-2023-2017 are 94, 1336, and 184.