SilverStripe CMS up to 4.4.4 HTTP Header Cache Poisoning request smuggling

Summaryinfo

A vulnerability labeled as critical has been found in SilverStripe CMS up to 4.4.4. This affects an unknown function. Executing a manipulation as part of HTTP Header can lead to request smuggling (Cache Poisoning). This vulnerability appears as CVE-2019-19326. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in SilverStripe CMS up to 4.4.4 (Content Management System). This vulnerability affects an unknown part. The manipulation as part of a HTTP Header leads to a request smuggling vulnerability (Cache Poisoning). The CWE definition for the vulnerability is CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Silverstripe CMS sites through 4.4.4 which have opted into HTTP Cache Headers on responses served by the framework's HTTP layer can be vulnerable to web cache poisoning. Through modifying the X-Original-Url and X-HTTP-Method-Override headers, responses with malicious HTTP headers can return unexpected responses to other consumers of this cached response. Most other headers associated with web cache poisoning are already disabled through request hostname forgery whitelists.

The weakness was presented 07/15/2020 (Website). The advisory is available at silverstripe.org. This vulnerability was named CVE-2019-19326 since 11/27/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Content Management System

Vendor

• SilverStripe

Name

• CMS

Version

• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4

License

• open-source

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