{"answers":{"affected":"2 open source packages ship an affected version, including github.com/ory/fosite. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-15234 in the wild and no public exploit code.","fix":"Upgrade github.com/ory/fosite to 0.34.1 or later.","what":"CVE-2020-15234 is a medium-severity vulnerability in ory fosite, published on 2 Oct 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-15234 and fix it if it is affected.\n\nWhat it is: CVE-2020-15234 is a medium-severity vulnerability in ory fosite, published on 2 Oct 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-15234 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/ory/fosite (Go): affected all versions; fixed in 0.34.1\n- github.com/ory/fosite (Go): affected all versions; fixed in 0.34.1\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-2020-15234/ (Markdown: https://insights.sbomify.com/CVE-2020-15234/index.md)","id":"CVE-2020-15234","markdown":"https://insights.sbomify.com/CVE-2020-15234/index.md","name":"CVE-2020-15234","record":{"aliases":["GHSA-grfp-q2mm-hfp6"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Go OAuth2 framework","requires_auth":"high_privilege","summary":"An attacker can bypass redirect URL validation by exploiting case-insensitive matching, potentially redirecting users to malicious sites during OAuth2 flows.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"fosite","vendor":"ory"}],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-178","name":"Improper Handling of Case Sensitivity"},{"id":"CWE-601","name":"URL Redirection to Untrusted Site"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"ORY Fosite is a security first OAuth2 \u0026 OpenID Connect framework for Go. In Fosite before version 0.34.1, the OAuth 2.0 Client's registered redirect URLs and the redirect URL provided at the OAuth2 Authorization Endpoint where compared using strings.ToLower while they should have been compared with a simple string match. This allows an attacker to register a client with allowed redirect URL https://example.com/callback. Then perform an OAuth2 flow and requesting redirect URL https://example.com/CALLBACK. Instead of an error (invalid redirect URL), the browser is redirected to https://example.com/CALLBACK with a potentially successful OAuth2 response, depending on the state of the overall OAuth2 flow (the user might still deny the request for example). This vulnerability has been patched in ORY Fosite v0.34.1.","ecosystems":["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":"Redirect URL matching ignores character casing","id":"CVE-2020-15234","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"open_redirect","year":"2020"},"n_packages":2,"n_references":2,"next":{"headline":"Sensitive data exposure in RACTF","id":"CVE-2020-15235"},"packages":[{"ecosystem":"Go","fixed":["0.34.1"],"introduced":["0"],"last_affected":[],"package":"github.com/ory/fosite","purl":null,"source":"GHSA-grfp-q2mm-hfp6"},{"ecosystem":"Go","fixed":["0.34.1"],"introduced":["0"],"last_affected":[],"package":"github.com/ory/fosite","purl":"pkg:golang/github.com/ory/fosite","source":"GHSA-grfp-q2mm-hfp6"}],"prev":{"headline":"OAuth2 Redirect URL validity does not respect query parameters and character casing for loopback addresses","id":"CVE-2020-15233"},"products":["fosite"],"published":"2020-10-02","related":[{"cvss_score":8.1,"headline":"Replay of private_key_jwt possible in ORY Fosite","id":"CVE-2020-15222","kev_date_added":null,"published":"2020-09-24"},{"cvss_score":8,"headline":"Ignored storage errors on token revokation in ORY Fosite","id":"CVE-2020-15223","kev_date_added":null,"published":"2020-09-24"},{"cvss_score":6.1,"headline":"OAuth2 Redirect URL validity does not respect query parameters and character casing for loopback addresses","id":"CVE-2020-15233","kev_date_added":null,"published":"2020-10-02"}],"sources":[{"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":"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":["ory"]},"summary":"An attacker can bypass redirect URL validation by exploiting case-insensitive matching, potentially redirecting users to malicious sites during OAuth2 flows.","url":"https://insights.sbomify.com/CVE-2020-15234/"}