[DRE-maint] Bug#959903: ruby-doorkeeper: CVE-2020-10187

[Salvatore Bonaccorso]

Source: ruby-doorkeeper
Version: 5.0.2-2
Severity: grave
Tags: security upstream

Hi,

The following vulnerability was published for ruby-doorkeeper.

CVE-2020-10187[0]:
| Doorkeeper version 5.0.0 and later contains an information disclosure
| vulnerability that allows an attacker to retrieve the client secret
| only intended for the OAuth application owner. After authorizing the
| application and allowing access, the attacker simply needs to request
| the list of their authorized applications in a JSON format (usually
| GET /oauth/authorized_applications.json). An application is vulnerable
| if the authorized applications controller is enabled.


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-2020-10187
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10187
[1] https://github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9
[2] https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6

Please adjust the affected versions in the BTS as needed. It is said
that it only affects versions >= 5.0.0, but this needs to be checked
yet (and why).

Regards,
Salvatore