Vulnerability · Published Apr 17, 2023 · Assigned by STAR_Labs
CVE-2023-2017Improper Control of Generation of Code in Twig Rendered Views in Shopware
High 8.8
In plain English
A high-severity security flaw in Shopware 6 from Shopware AG. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 81% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | shopware/core | 6.4.20.1 | GHSA-7v2v-9rm4-7m8f |
| Packagist | shopware/platform | 6.4.20.1 | GHSA-7v2v-9rm4-7m8f |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Shopware AG | Shopware 6 | 0 – through 6.4.20.06.5.0.0-rc1 – through 6.5.0.0-rc4 |
Weakness: CWE-184, CWE-1336 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://docs.shopware.com/en/shopware-6-en/security-updates/security-update-04-2023 vendor-advisory
- https://github.com/shopware/platform/security/advisories/GHSA-7v2v-9rm4-7m8f vendor-advisory
- https://starlabs.sg/advisories/23/23-2017/ third-party-advisory