{"answers":{"affected":"4 open source packages ship an affected version, including Microsoft.NETCore.App and System.Security.Cryptography.X509Certificates. It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-11770 in the wild and no public exploit code.","fix":"Upgrade Microsoft.NETCore.App to 2.0.3 or later.","what":"CVE-2017-11770 is a high-severity denial of service vulnerability in Microsoft Corporation .NET Core, published on 15 Nov 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-2017-11770 and fix it if it is affected.\n\nWhat it is: CVE-2017-11770 is a high-severity denial of service vulnerability in Microsoft Corporation .NET Core, published on 15 Nov 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-2017-11770 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.NETCore.App (NuGet): affected from 1.0.0; fixed in 2.0.3\n- Microsoft.NETCore.App (NuGet): affected from 1.0.0; fixed in 2.0.3\n- System.Security.Cryptography.X509Certificates (NuGet): affected from 4.0.0; fixed in 4.1.2\n- System.Security.Cryptography.X509Certificates (NuGet): affected from 4.0.0; fixed in 4.1.2\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-2017-11770/ (Markdown: https://insights.sbomify.com/CVE-2017-11770/index.md)","id":"CVE-2017-11770","markdown":"https://insights.sbomify.com/CVE-2017-11770/index.md","name":"CVE-2017-11770","record":{"aliases":["GHSA-7mfr-774f-w5r9"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":".NET Core framework","requires_auth":"none","summary":"An unauthenticated attacker can cause a denial of service in .NET Core web applications by sending malformed certificate data.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"aspnetcore","vendor":"microsoft"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":".NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly parsing certificate data. A denial of service vulnerability exists when .NET Core improperly handles parsing certificate data, aka \".NET CORE Denial Of Service Vulnerability\".","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":"Improper Certificate Validation","id":"CVE-2017-11770","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"denial_of_service","year":"2017"},"n_packages":4,"n_references":4,"next":{"headline":"Code injection in Windows Search","id":"CVE-2017-11771"},"packages":[{"ecosystem":"NuGet","fixed":["2.0.3"],"introduced":["1.0.0"],"last_affected":[],"package":"Microsoft.NETCore.App","purl":null,"source":"GHSA-7mfr-774f-w5r9"},{"ecosystem":"NuGet","fixed":["2.0.3"],"introduced":["1.0.0"],"last_affected":[],"package":"Microsoft.NETCore.App","purl":"pkg:nuget/Microsoft.NETCore.App","source":"GHSA-7mfr-774f-w5r9"},{"ecosystem":"NuGet","fixed":["4.1.2"],"introduced":["4.0.0"],"last_affected":[],"package":"System.Security.Cryptography.X509Certificates","purl":null,"source":"GHSA-7mfr-774f-w5r9"},{"ecosystem":"NuGet","fixed":["4.1.2"],"introduced":["4.0.0"],"last_affected":[],"package":"System.Security.Cryptography.X509Certificates","purl":"pkg:nuget/System.Security.Cryptography.X509Certificates","source":"GHSA-7mfr-774f-w5r9"}],"prev":{"headline":"Code injection in Microsoft Windows TRIE","id":"CVE-2017-11769"},"products":[".NET Core"],"published":"2017-11-15","related":[{"cvss_score":7.5,"headline":"Denial of service in ASP.NET Core","id":"CVE-2017-11883","kev_date_added":null,"published":"2017-11-15"}],"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":"2024-09-16","vendors":["Microsoft Corporation"]},"summary":"An unauthenticated attacker can cause a denial of service in .NET Core web applications by sending malformed certificate data.","url":"https://insights.sbomify.com/CVE-2017-11770/"}