[DRE-maint] Bug#926348: ruby-devise: CVE-2019-5421

[Salvatore Bonaccorso]

Source: ruby-devise
Version: 4.5.0-2
Severity: important
Tags: security upstream
Forwarded: https://github.com/plataformatec/devise/issues/4981

Hi,

The following vulnerability was published for ruby-devise.

CVE-2019-5421[0]:
| Plataformatec Devise version 4.5.0 and earlier, using the lockable
| module contains a CWE-367 vulnerability in The
| `Devise::Models::Lockable` class, more specifically at the
| `#increment_failed_attempts` method. File location:
| lib/devise/models/lockable.rb that can result in Multiple concurrent
| requests can prevent an attacker from being blocked on brute force
| attacks. This attack appear to be exploitable via Network connectivity
| - brute force attacks. This vulnerability appears to have been fixed
| in 4.6.0 and later.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2019-5421
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5421
[1] https://github.com/plataformatec/devise/issues/4981
[2] https://github.com/plataformatec/devise/pull/4996

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore