Vulnerability Monitor

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CVE-2019-9837

Doorkeeper::OpenidConnect (aka the OpenID Connect extension for Doorkeeper) 1.4.x and 1.5.x before 1.5.4 has an open redirect via the redirect_uri field in an OAuth authorization request (that results in an error response) with the 'openid' scope and a prompt=none value. This allows phishing attacks against the authorization flow.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 1 product from openid organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2019-03-21T16:01:17.280

Last Modified

2024-11-21T04:52:24.510

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 6.1 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Primary
CWE-601

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openid	openid_connect	< 1.5.4	Yes

References

https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md Third Party Advisory ([email protected])
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61 Third Party Advisory ([email protected])
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66 Patch, Third Party Advisory ([email protected])
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For openid's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.