CVE-2020-10187: Doorkeeper Exposure Of Sensitive Information To Vulnerability
HIGHCVE-2020-10187 is a HIGH (CVSS 7.5) exposure of sensitive information to vulnerability (CWE-862: Missing Authorization) affecting Doorkeeper libraries in the RubyGems ecosystem. The issue involves exposure of sensitive information to an unauthorized actor in doorkeeper. Remediation is available by upgrading affected packages to version 5.0.3, 5.1.1, 5.2.5, 5.3.2.
CVE-2020-10187 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2020-10187
To remediate this vulnerability, upgrade all affected Doorkeeper dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade doorkeeper to 5.0.3Upgrade doorkeeper to 5.1.1Upgrade doorkeeper to 5.2.5Upgrade doorkeeper to 5.3.2Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for doorkeeperHow to Check if You Are Affected
To determine whether your application is affected by CVE-2020-10187, inspect your project dependencies for Doorkeeper:
inspect dependencies for doorkeeperAnalyze the terminal output to locate any version of Doorkeeper in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.3), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Doorkeeper, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-10187 Affected Doorkeeper Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
doorkeeper
|
RubyGems |
≥ 5.0.0
< 5.0.3
|
5.0.3
|
|
doorkeeper
|
RubyGems |
≥ 5.1.0
< 5.1.1
All 1 versions
5.1.0
|
5.1.1
|
|
doorkeeper
|
RubyGems |
≥ 5.2.0
< 5.2.5
|
5.2.5
|
|
doorkeeper
|
RubyGems |
≥ 5.3.0
< 5.3.2
|
5.3.2
|
References
Frequently Asked Questions
What is CVE-2020-10187?
Which Doorkeeper versions are affected?
What version fixes CVE-2020-10187?
Is doorkeeper affected?
What is the CVSS score of CVE-2020-10187?
What CWE is associated with CVE-2020-10187?
How can I check RubyGems dependencies for CVE-2020-10187?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-j7vx-8mqj-cqp9",
"modified" : "2021-07-29T16:42:27Z",
"published" : "2020-05-07T21:11:07Z",
"aliases" : [ "CVE-2020-10187" ],
"summary" : "Exposure of Sensitive Information to an Unauthorized Actor in Doorkeeper",
"details" : "### Impact\nInformation disclosure vulnerability. Allows an attacker to see all `Doorkeeper::Application` model attribute values (including secrets) using authorized applications controller if it's enabled (GET /oauth/authorized_applications.json).\n\n### Patches\n\nThese versions have the fix:\n\n* 5.0.3\n* 5.1.1\n* 5.2.5\n* 5.3.2\n\n### Workarounds\nPatch `Doorkeeper::Application` model `#as_json(options = {})` method and define only those attributes you want to expose.\n\nAdditional recommended hardening is to enable application secrets hashing ([guide](https://doorkeeper.gitbook.io/guides/security/token-and-application-secrets)), available since Doorkeeper 5.1. This would render the exposed secret useless.\n\n### References\n\n- Commit with fix: https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6\n- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10187",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "RubyGems",
"name" : "doorkeeper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0"
}, {
"fixed" : "5.0.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "RubyGems",
"name" : "doorkeeper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.1.0"
}, {
"fixed" : "5.1.1"
} ]
} ],
"versions" : [ "5.1.0" ]
}, {
"package" : {
"ecosystem" : "RubyGems",
"name" : "doorkeeper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.2.0"
}, {
"fixed" : "5.2.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "RubyGems",
"name" : "doorkeeper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.3.0"
}, {
"fixed" : "5.3.2"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-10187"
}, {
"type" : "WEB",
"url" : "https://github.com/rubysec/ruby-advisory-db/pull/446"
}, {
"type" : "WEB",
"url" : "https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6"
}, {
"type" : "WEB",
"url" : "https://github.com/doorkeeper-gem/doorkeeper/releases"
}, {
"type" : "WEB",
"url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/doorkeeper/CVE-2020-10187.yml"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2020-05-07T21:09:24Z",
"nvd_published_at" : "2020-05-04T14:15:00Z"
}
}