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Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')


Severity Medium
Score 4.3/10


Affected versions of Sylius give attackers the ability to switch channels via the _channel_code GET parameter in production environments. This was meant to be enabled only when kernel.debug is set to true. However, if no sylius_channel.debug is set explicitly in the configuration, the default value which is kernel.debug will be not resolved and cast to boolean, enabling this debug feature even if that parameter is set to false. Sylius versions before 1.3.16, 1.4.x before 1.4.12, 1.5.x before 1.5.9, 1.6.x before 1.6.5 and 1.7.x up to 1.7.0-ALPHA.2, are vulnerable. Versions older than 1.3 are not covered by our security support anymore.

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CWE-444 - HTTP Request Smuggling

Entities such as web servers, web caching proxies, and application firewalls could parse HTTP requests differently. When there are two or more such entities in the path of an HTTP request, an attacker can send a specially crafted HTTP request that is seen as two different sets of requests by the attacked devices, allowing the attacker to smuggle a request into one device without the other device being aware of it. Such a vulnerability can prove devastating, for it enables further attacks on the application, like web cache poisoning, session hijacking, cross-site scripting, security bypassing, and sensitive information exposure.


Advisory Timeline

  • Published