{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2021-21411","title":"Title"},{"category":"description","text":"OAuth2-Proxy is an open source reverse proxy that provides authentication with Google, Github or other providers. The `--gitlab-group` flag for group-based authorization in the GitLab provider stopped working in the v7.0.0 release. Regardless of the flag settings, authorization wasn't restricted. Additionally, any authenticated users had whichever groups were set in `--gitlab-group` added to the new `X-Forwarded-Groups` header to the upstream application. While adding GitLab project based authorization support in #630, a bug was introduced where the user session's groups field was populated with the `--gitlab-group` config entries instead of pulling the individual user's group membership from the GitLab Userinfo endpoint. When the session groups where compared against the allowed groups for authorization, they matched improperly (since both lists were populated with the same data) so authorization was allowed. This impacts GitLab Provider users who relies on group membership for authorization restrictions. Any authenticated users in your GitLab environment can access your applications regardless of `--gitlab-group` membership restrictions. This is patched in v7.1.0. There is no workaround for the Group membership bug. But `--gitlab-project` can be set to use Project membership as the authorization checks instead of groups; it is not broken.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2021-21411","url":"https://www.suse.com/security/cve/CVE-2021-21411"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"Advisory link for SUSE-SU-2025:02912-1","url":"https://lists.suse.com/pipermail/sle-updates/2025-August/041294.html"}],"title":"SUSE CVE CVE-2021-21411","tracking":{"current_release_date":"2026-03-13T15:06:11Z","generator":{"date":"2025-08-12T23:43:08Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2021-21411","initial_release_date":"2025-08-12T23:43:08Z","revision_history":[{"date":"2025-08-12T23:43:08Z","number":"2","summary":"Current version"},{"date":"2025-08-19T23:33:32Z","number":"3","summary":"Current version"},{"date":"2025-11-04T00:46:44Z","number":"4","summary":"Current version"},{"date":"2026-01-16T01:05:40Z","number":"5","summary":"unknown changes"},{"date":"2026-03-12T15:20:43Z","number":"6","summary":"unknown changes"},{"date":"2026-03-13T15:06:11Z","number":"7","summary":"unknown changes"}],"status":"interim","version":"7"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise Server 16.0","product":{"name":"SUSE Linux Enterprise Server 16.0","product_id":"SUSE Linux Enterprise Server 16.0","product_identification_helper":{"cpe":"cpe:/o:suse:sles:16:16.0:server"}}},{"category":"product_name","name":"openSUSE Tumbleweed","product":{"name":"openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed","product_identification_helper":{"cpe":"cpe:/o:opensuse:tumbleweed"}}},{"category":"product_version","name":"govulncheck-vulndb-0.0.20250811T192933-1.1","product":{"name":"govulncheck-vulndb-0.0.20250811T192933-1.1","product_id":"govulncheck-vulndb-0.0.20250811T192933-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/govulncheck-vulndb@0.0.20250811T192933-1.1?upstream=govulncheck-vulndb-0.0.20250811T192933-1.1.src.rpm"}}},{"category":"product_version","name":"govulncheck-vulndb-0.0.20250814T182633-160000.1.2","product":{"name":"govulncheck-vulndb-0.0.20250814T182633-160000.1.2","product_id":"govulncheck-vulndb-0.0.20250814T182633-160000.1.2","product_identification_helper":{"purl":"pkg:rpm/suse/govulncheck-vulndb@0.0.20250814T182633-160000.1.2?upstream=govulncheck-vulndb-0.0.20250814T182633-160000.1.2.src.rpm"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"govulncheck-vulndb-0.0.20250814T182633-160000.1.2 as component of SUSE Linux Enterprise Server 16.0","product_id":"SUSE Linux Enterprise Server 16.0:govulncheck-vulndb-0.0.20250814T182633-160000.1.2"},"product_reference":"govulncheck-vulndb-0.0.20250814T182633-160000.1.2","relates_to_product_reference":"SUSE Linux Enterprise Server 16.0"},{"category":"default_component_of","full_product_name":{"name":"govulncheck-vulndb-0.0.20250811T192933-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:govulncheck-vulndb-0.0.20250811T192933-1.1"},"product_reference":"govulncheck-vulndb-0.0.20250811T192933-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2021-21411","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2021-21411"}],"notes":[{"category":"general","text":"OAuth2-Proxy is an open source reverse proxy that provides authentication with Google, Github or other providers. The `--gitlab-group` flag for group-based authorization in the GitLab provider stopped working in the v7.0.0 release. Regardless of the flag settings, authorization wasn't restricted. Additionally, any authenticated users had whichever groups were set in `--gitlab-group` added to the new `X-Forwarded-Groups` header to the upstream application. While adding GitLab project based authorization support in #630, a bug was introduced where the user session's groups field was populated with the `--gitlab-group` config entries instead of pulling the individual user's group membership from the GitLab Userinfo endpoint. When the session groups where compared against the allowed groups for authorization, they matched improperly (since both lists were populated with the same data) so authorization was allowed. This impacts GitLab Provider users who relies on group membership for authorization restrictions. Any authenticated users in your GitLab environment can access your applications regardless of `--gitlab-group` membership restrictions. This is patched in v7.1.0. There is no workaround for the Group membership bug. But `--gitlab-project` can be set to use Project membership as the authorization checks instead of groups; it is not broken.","title":"CVE description"}],"product_status":{"recommended":["SUSE Linux Enterprise Server 16.0:govulncheck-vulndb-0.0.20250814T182633-160000.1.2","openSUSE Tumbleweed:govulncheck-vulndb-0.0.20250811T192933-1.1"]},"references":[{"category":"external","summary":"CVE-2021-21411","url":"https://www.suse.com/security/cve/CVE-2021-21411"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"Advisory link for SUSE-SU-2025:02912-1","url":"https://lists.suse.com/pipermail/sle-updates/2025-August/041294.html"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Server 16.0:govulncheck-vulndb-0.0.20250814T182633-160000.1.2","openSUSE Tumbleweed:govulncheck-vulndb-0.0.20250811T192933-1.1"]}],"scores":[{"cvss_v3":{"baseScore":5.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"products":["SUSE Linux Enterprise Server 16.0:govulncheck-vulndb-0.0.20250814T182633-160000.1.2","openSUSE Tumbleweed:govulncheck-vulndb-0.0.20250811T192933-1.1"]}],"threats":[{"category":"impact","date":"2021-03-27T15:53:16Z","details":"moderate"}],"title":"CVE-2021-21411"}]}