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GHSA-m42h-mh85-4qgc
No affected components available
Possible Remote Code Execution Exploit in Rails Development Mode
Impact
With some knowledge of a target application it is possible for an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.
All users running an affected release should either upgrade or use one of the workarounds immediately.
Releases
The 6.0.0.beta3 and 5.2.2.1 releases are available at the normal locations.
Workarounds
This issue can be mitigated by specifying a secret key in development mode. In "config/environments/development.rb" add this:
config.secret_key_base = SecureRandom.hex(64)
Please note that only the 5.2.x, 5.1.x, 5.0.x, and 4.2.x series are supported at present. Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases.
Credits
Thanks to ooooooo_q
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. 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 confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.
The exploit probability is critical. The vulnerability is very likely 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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