{"answers":{"affected":"4 open source packages ship an affected version, including github.com/crewjam/saml and grafana. It affects 6 products.","exploited":"There is no known exploitation of CVE-2020-27846 in the wild and no public exploit code.","fix":"Upgrade github.com/crewjam/saml to 0.4.3 or later.","what":"CVE-2020-27846 is a critical authentication bypass vulnerability in Fedoraproject Fedora, published on 21 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-27846 and fix it if it is affected.\n\nWhat it is: CVE-2020-27846 is a critical authentication bypass vulnerability in Fedoraproject Fedora, published on 21 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-27846 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/crewjam/saml (Go): affected all versions; fixed in 0.4.3\n- github.com/crewjam/saml (Go): affected all versions; fixed in 0.4.3\n- github.com/crewjam/saml (Go): affected all versions; fixed in 0.4.3\n- grafana (Bitnami): affected all versions; fixed in 6.7.5, 7.2.3, 7.3.6\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2020-27846/ (Markdown: https://insights.sbomify.com/CVE-2020-27846/index.md)","id":"CVE-2020-27846","markdown":"https://insights.sbomify.com/CVE-2020-27846/index.md","name":"CVE-2020-27846","record":{"aliases":["BIT-grafana-2020-27846","GHSA-4hq8-gmxx-h6w9","GO-2021-0058"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass","data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Go SAML library","requires_auth":"none","summary":"Attackers can bypass SAML authentication in the crewjam/saml library due to signature verification flaws, compromising confidentiality, integrity, and availability.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"grafana","vendor":"grafana"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"openshift_container_platform","vendor":"redhat"},{"product":"openshift_service_mesh","vendor":"redhat"},{"product":"saml","vendor":"saml_project"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-115","name":"Misinterpretation of Input"}],"description":"A signature verification vulnerability exists in crewjam/saml. This flaw allows an attacker to bypass SAML Authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.","ecosystems":["Bitnami","Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"XML Processing error in github.com/crewjam/saml","id":"CVE-2020-27846","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"fedoraproject:fedora","products":["fedoraproject:fedora","grafana:grafana","redhat:enterprise_linux","redhat:openshift_container_platform"],"type":"auth_bypass","year":"2020"},"n_packages":4,"n_references":7,"next":{"headline":"Auth bypass in dexidp/dex","id":"CVE-2020-27847"},"packages":[{"ecosystem":"Bitnami","fixed":["6.7.5","7.2.3","7.3.6"],"introduced":["0","7.0.0","7.3.0"],"last_affected":[],"package":"grafana","purl":"pkg:bitnami/grafana","source":"BIT-grafana-2020-27846"},{"ecosystem":"Go","fixed":["0.4.3"],"introduced":["0"],"last_affected":[],"package":"github.com/crewjam/saml","purl":null,"source":"GHSA-4hq8-gmxx-h6w9"},{"ecosystem":"Go","fixed":["0.4.3"],"introduced":["0"],"last_affected":[],"package":"github.com/crewjam/saml","purl":"pkg:golang/github.com/crewjam/saml","source":"GHSA-4hq8-gmxx-h6w9"},{"ecosystem":"Go","fixed":["0.4.3"],"introduced":["0"],"last_affected":[],"package":"github.com/crewjam/saml","purl":"pkg:golang/github.com/crewjam/saml","source":"GO-2021-0058"}],"prev":{"headline":"Denial of service in openjpeg","id":"CVE-2020-27845"},"products":["crewjam/saml"],"published":"2020-12-21","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can bypass SAML authentication in the crewjam/saml library due to signature verification flaws, compromising confidentiality, integrity, and availability.","url":"https://insights.sbomify.com/CVE-2020-27846/"}