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GHSA-c6qr-h5vq-59jc
No affected components available
There is a vulnerability in versions of Rails prior to 6.0.3.2 that allowed an untrusted user to run any pending migrations on a Rails app running in production.
This vulnerability has been assigned the CVE identifier CVE-2020-8185.
Versions Affected: 6.0.0 < rails < 6.0.3.2
Not affected: Applications with config.action_dispatch.show_exceptions = false (this is not a default setting in production)
Fixed Versions: rails >= 6.0.3.2
Impact
Using this issue, an attacker would be able to execute any migrations that are pending for a Rails app running in production mode. It is important to note that an attacker is limited to running migrations the application developer has already defined in their application and ones that have not already run.
Workarounds
Until such time as the patch can be applied, application developers should disable the ActionDispatch middleware in their production environment via a line such as this one in their config/environment/production.rb:
config.middleware.delete ActionDispatch::ActionableExceptions
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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