Authorization Bypass Affecting github.com/oauth2-proxy/oauth2-proxy/providers package, versions >=7.0.0 <7.1.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.23% (47th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMOAUTH2PROXYOAUTH2PROXYPROVIDERS-1089458
  • published29 Mar 2021
  • disclosed29 Mar 2021
  • credit@bohrasd

Introduced: 29 Mar 2021

CVE-2021-21411  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade github.com/oauth2-proxy/oauth2-proxy/providers to version 7.1.0 or higher.

Overview

Affected versions of this package are vulnerable to Authorization Bypass. The --gitlab-group flag for group-based authorization in the GitLab provider stopped working whereby, regardless of the flag settings, authorization was not restricted. Furthermore, for any authenticated users, groups that were set in --gitlab-group were added to the X-Forwarded-Groups header to the upstream application.

CVSS Base Scores

version 3.1