Medium severity · published Mar 15, 2019
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…
6.1
CVSS
1.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OC
Openid Connect · Openid
1.4.0 before 1.5.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9837
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9837
Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md
Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61
Patch
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66