CVE-2019-19326 SilverStripe Web Cache Poisoning through HTTPRequestBuilder
Attackers can poison web caches in Silverstripe CMS by manipulating specific headers, causing malicious responses to be served to other users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-19326?
CVE-2019-19326 is a medium-severity vulnerability in Silverstripe Silverstripe, published on 15 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-444
Which versions are affected by CVE-2019-19326?
6 open source packages ship an affected version, including silverstripe/framework. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
silverstripe/framework Packagist | From 3.0.0 | 3.7.5 |
silverstripe/framework Packagist | From 3.0.0 | 3.7.5 |
silverstripe/framework Packagist | From 4.0.0 | 4.4.7 |
silverstripe/framework Packagist | From 4.0.0 | 4.4.7 |
silverstripe/framework Packagist | From 4.5.0 | 4.5.4 |
silverstripe/framework Packagist | From 4.5.0 | 4.5.4 |
Products include Silverstripe Silverstripe.
How do I fix CVE-2019-19326?
Upgrade silverstripe/framework to a fixed version for your release line: 3.7.5, 4.4.7 or 4.5.4.
Is CVE-2019-19326 being exploited?
There is no known exploitation of CVE-2019-19326 in the wild and no public exploit code.
Other vulnerabilities in Silverstripe Silverstripe
Sources
Also known as GHSA-q9ff-3q93-fm8m.