Doorkeeper Gem up to 4.1.0 OAuth Token Revocation 7pk security

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Doorkeeper Gem up to 4.1.0. This affects an unknown function of the component OAuth Token Revocation Handler. The manipulation results in 7pk security. This vulnerability is reported as CVE-2016-6582. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Doorkeeper Gem up to 4.1.0. Affected is an unknown part of the component OAuth Token Revocation Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Doorkeeper gem before 4.2.0 for Ruby might allow remote attackers to conduct replay attacks or revoke arbitrary tokens by leveraging failure to implement the OAuth 2.0 Token Revocation specification.

The bug was discovered 08/03/2016. The weakness was disclosed 08/18/2016 by Justin Bull as confirmed mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2016-6582 since 08/03/2016. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1211.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 233551 (Ubuntu 16.04 LTS : Doorkeeper vulnerabilities (USN-7394-1)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370165 (RubyGem Doorkeeper Security Bypass Vulnerability).

Upgrading to version 4.2.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (233551) and SecurityFocus (BID 92551†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.1
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 233551
Nessus Name: Ubuntu 16.04 LTS : Doorkeeper vulnerabilities (USN-7394-1)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Doorkeeper Gem 4.2.0
Patch: github.com

Timelineinfo

08/03/2016 🔍
08/03/2016 +0 days 🔍
08/03/2016 +0 days 🔍
08/18/2016 +15 days 🔍
08/18/2016 +0 days 🔍
08/18/2016 +0 days 🔍
08/23/2016 +5 days 🔍
01/23/2017 +153 days 🔍
05/14/2026 +3398 days 🔍

Sourcesinfo

Advisory: 138430
Researcher: Justin Bull
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6582 (🔍)
GCVE (CVE): GCVE-0-2016-6582
GCVE (VulDB): GCVE-100-90912
SecurityFocus: 92551 - Doorkeeper CVE-2016-6582 Security Bypass Vulnerability

Entryinfo

Created: 08/23/2016 11:39
Updated: 05/14/2026 15:34
Changes: 08/23/2016 11:39 (56), 04/01/2019 16:03 (13), 09/14/2022 09:35 (4), 09/24/2024 10:54 (16), 03/31/2025 20:35 (2), 05/14/2026 15:34 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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