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Open Redirect in oauth2_proxy

Moderate severity GitHub Reviewed Published Dec 20, 2021 to the GitHub Advisory Database • Updated Sep 27, 2023

Package

gomod github.com/bitly/oauth2_proxy (Go)

Affected versions

< 2.2.0

Patched versions

2.2.0

Description

The Bitly oauth2_proxy in version 2.1 and earlier was affected by an open redirect vulnerability during the start and termination of the 2-legged OAuth flow. This issue was caused by improper input validation and a violation of RFC-6819

References

Reviewed May 19, 2021
Published to the GitHub Advisory Database Dec 20, 2021
Last updated Sep 27, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.085%
(38th percentile)

Weaknesses

CVE ID

CVE-2017-1000070

GHSA ID

GHSA-jm34-xm8m-w958

Source code

No known source code
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