{"answers":{"affected":"4 open source packages ship an affected version, including Nancy. It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-9785 in the wild and no public exploit code.","fix":"Upgrade Nancy to a fixed version for your release line: 1.4.4 or 2.0.0.","what":"CVE-2017-9785 is a critical unsafe deserialization vulnerability in NancyFX Framework Up to 2.0.0, published on 20 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2017-9785 and fix it if it is affected.\n\nWhat it is: CVE-2017-9785 is a critical unsafe deserialization vulnerability in NancyFX Framework Up to 2.0.0, published on 20 Jul 2017. 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-2017-9785 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Nancy (NuGet): affected all versions; fixed in 1.4.4\n- Nancy (NuGet): affected all versions; fixed in 1.4.4\n- Nancy (NuGet): affected from 2.0.0-alpha; fixed in 2.0.0\n- Nancy (NuGet): affected from 2.0.0-alpha; fixed in 2.0.0\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-2017-9785/ (Markdown: https://insights.sbomify.com/CVE-2017-9785/index.md)","id":"CVE-2017-9785","markdown":"https://insights.sbomify.com/CVE-2017-9785/index.md","name":"CVE-2017-9785","record":{"aliases":["GHSA-mx3q-j2g2-5qxq"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"NancyFX web framework","requires_auth":"none","summary":"Remote code execution is possible via deserialization of JSON data in a CSRF cookie within the NancyFX web framework.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hpe","cpe":[{"product":"nancy","vendor":"nancyfx"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Csrf.cs in NancyFX Nancy before 1.4.4 and 2.x before 2.0-dangermouse has Remote Code Execution via Deserialization of JSON data in a CSRF Cookie.","ecosystems":["NuGet"],"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":"Deserialization of Untrusted Data in NancyFX Nancy","id":"CVE-2017-9785","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"deserialization","year":"2017"},"n_packages":4,"n_references":1,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2017-9786"},"packages":[{"ecosystem":"NuGet","fixed":["1.4.4"],"introduced":["0"],"last_affected":[],"package":"Nancy","purl":null,"source":"GHSA-mx3q-j2g2-5qxq"},{"ecosystem":"NuGet","fixed":["1.4.4"],"introduced":["0"],"last_affected":[],"package":"Nancy","purl":"pkg:nuget/Nancy","source":"GHSA-mx3q-j2g2-5qxq"},{"ecosystem":"NuGet","fixed":["2.0.0"],"introduced":["2.0.0-alpha"],"last_affected":[],"package":"Nancy","purl":null,"source":"GHSA-mx3q-j2g2-5qxq"},{"ecosystem":"NuGet","fixed":["2.0.0"],"introduced":["2.0.0-alpha"],"last_affected":[],"package":"Nancy","purl":"pkg:nuget/Nancy","source":"GHSA-mx3q-j2g2-5qxq"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2017-9783"},"products":["NancyFX Framework Up to 2.0.0"],"published":"2017-07-20","related":[],"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":"2024-08-05","vendors":["NancyFX"]},"summary":"Remote code execution is possible via deserialization of JSON data in a CSRF cookie within the NancyFX web framework.","url":"https://insights.sbomify.com/CVE-2017-9785/"}