{"answers":{"affected":"4 open source packages ship an affected version, including Microsoft.AspNetCore.All and Microsoft.AspNetCore.Mvc.Core. It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-11879 in the wild and no public exploit code.","fix":"Upgrade Microsoft.AspNetCore.All to 2.0.3 or later.","what":"CVE-2017-11879 is a high-severity vulnerability in Microsoft Corporation ASP.NET Core, published on 15 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2017-11879 and fix it if it is affected.\n\nWhat it is: CVE-2017-11879 is a high-severity vulnerability in Microsoft Corporation ASP.NET Core, published on 15 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2017-11879 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.AspNetCore.All (NuGet): affected from 2.0.0; fixed in 2.0.3\n- Microsoft.AspNetCore.All (NuGet): affected from 2.0.0; fixed in 2.0.3\n- Microsoft.AspNetCore.Mvc.Core (NuGet): affected from 2.0.0; fixed in 2.0.1\n- Microsoft.AspNetCore.Mvc.Core (NuGet): affected from 2.0.0; fixed in 2.0.1\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-2017-11879/ (Markdown: https://insights.sbomify.com/CVE-2017-11879/index.md)","id":"CVE-2017-11879","markdown":"https://insights.sbomify.com/CVE-2017-11879/index.md","name":"CVE-2017-11879","record":{"aliases":["GHSA-3wcj-rg8q-9cqv"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"ASP.NET Core framework","requires_auth":"none","summary":"Attackers can steal session cookies or tokens via crafted URLs, potentially leading to account takeover in ASP.NET Core applications.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"asp.net_core","vendor":"microsoft"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka \"ASP.NET Core Elevation Of Privilege 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":"Open redirect in ASP.NET Core","id":"CVE-2017-11879","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"open_redirect","year":"2017"},"n_packages":4,"n_references":3,"next":{"headline":"Information disclosure in Windows Kernel","id":"CVE-2017-11880"},"packages":[{"ecosystem":"NuGet","fixed":["2.0.3"],"introduced":["2.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.All","purl":null,"source":"GHSA-3wcj-rg8q-9cqv"},{"ecosystem":"NuGet","fixed":["2.0.3"],"introduced":["2.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.All","purl":"pkg:nuget/Microsoft.AspNetCore.All","source":"GHSA-3wcj-rg8q-9cqv"},{"ecosystem":"NuGet","fixed":["2.0.1"],"introduced":["2.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Mvc.Core","purl":null,"source":"GHSA-3wcj-rg8q-9cqv"},{"ecosystem":"NuGet","fixed":["2.0.1"],"introduced":["2.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Mvc.Core","purl":"pkg:nuget/Microsoft.AspNetCore.Mvc.Core","source":"GHSA-3wcj-rg8q-9cqv"}],"prev":{"headline":"Memory corruption in Microsoft Office","id":"CVE-2017-11878"},"products":["ASP.NET Core"],"published":"2017-11-15","related":[{"cvss_score":9.9,"headline":"ASP.NET Security Feature Bypass Vulnerability","id":"CVE-2025-55315","kev_date_added":null,"published":"2025-10-14"},{"cvss_score":9.4,"headline":"ASP.NET Core Tampering Vulnerability","id":"CVE-2026-88092","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":9.1,"headline":"ASP.NET Core Elevation of Privilege Vulnerability","id":"CVE-2026-40372","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":8.8,"headline":"ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability","id":"CVE-2021-43877","kev_date_added":null,"published":"2021-12-15"},{"cvss_score":8.8,"headline":"Remote code execution in ASP.NET Core","id":"CVE-2020-0603","kev_date_added":null,"published":"2020-01-14"},{"cvss_score":8.8,"headline":"Elevation of privilege in ASP.NET Core","id":"CVE-2019-1302","kev_date_added":null,"published":"2019-09-11"},{"cvss_score":8.8,"headline":"ASP.NET Core allow an elevation of privilege","id":"CVE-2018-0787","kev_date_added":null,"published":"2018-03-14"}],"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":"Attackers can steal session cookies or tokens via crafted URLs, potentially leading to account takeover in ASP.NET Core applications.","url":"https://insights.sbomify.com/CVE-2017-11879/"}