{"answers":{"affected":"2 open source packages ship an affected version, including dotnet and dotnet-sdk. It affects 4 products.","exploited":"There is no known exploitation of CVE-2021-31957 in the wild and no public exploit code.","fix":"Upgrade dotnet to 5.0.7 or later.","what":"CVE-2021-31957 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 8 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-31957 and fix it if it is affected.\n\nWhat it is: CVE-2021-31957 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 8 Jun 2021. 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-2021-31957 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- dotnet (Bitnami): affected from 5.0.0; fixed in 5.0.7\n- dotnet-sdk (Bitnami): affected from 5.0.0; fixed in 5.0.7\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-2021-31957/ (Markdown: https://insights.sbomify.com/CVE-2021-31957/index.md)","id":"CVE-2021-31957","markdown":"https://insights.sbomify.com/CVE-2021-31957/index.md","name":"CVE-2021-31957","record":{"aliases":["BIT-dotnet-2021-31957","BIT-dotnet-sdk-2021-31957","RHSA-2021:2350","RHSA-2021:2351","RHSA-2021:2352","RHSA-2021:2353"],"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 attacker can cause a denial of service in applications using the .NET Core framework by exploiting a resource exhaustion flaw.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":".net","vendor":"microsoft"},{"product":".net_core","vendor":"microsoft"},{"product":"visual_studio_2019","vendor":"microsoft"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"ASP.NET Core Denial of Service Vulnerability","ecosystems":["Bitnami","Red Hat:enterprise_linux:8::appstream","Red Hat:rhel_dotnet:3.1::el7","Red Hat:rhel_dotnet:5.0::el7"],"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":"ASP.NET Core Denial of Service Vulnerability","id":"CVE-2021-31957","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"fedoraproject:fedora","products":["fedoraproject:fedora","microsoft:.net","microsoft:visual_studio_2019"],"type":"denial_of_service","year":"2021"},"n_packages":60,"n_references":5,"next":{"headline":"Windows NTLM Elevation of Privilege Vulnerability","id":"CVE-2021-31958"},"packages":[{"ecosystem":"Bitnami","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"dotnet","purl":"pkg:bitnami/dotnet","source":"BIT-dotnet-2021-31957"},{"ecosystem":"Bitnami","fixed":["5.0.7"],"introduced":["5.0.0"],"last_affected":[],"package":"dotnet-sdk","purl":"pkg:bitnami/dotnet-sdk","source":"BIT-dotnet-sdk-2021-31957"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-runtime-3.1","purl":"pkg:rpm/redhat/aspnetcore-runtime-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-runtime-5.0","purl":"pkg:rpm/redhat/aspnetcore-runtime-5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-targeting-pack-3.1","purl":"pkg:rpm/redhat/aspnetcore-targeting-pack-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"aspnetcore-targeting-pack-5.0","purl":"pkg:rpm/redhat/aspnetcore-targeting-pack-5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.204-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet","purl":"pkg:rpm/redhat/dotnet","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-apphost-pack-3.1","purl":"pkg:rpm/redhat/dotnet-apphost-pack-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-apphost-pack-3.1-debuginfo","purl":"pkg:rpm/redhat/dotnet-apphost-pack-3.1-debuginfo","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-apphost-pack-5.0","purl":"pkg:rpm/redhat/dotnet-apphost-pack-5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-apphost-pack-5.0-debuginfo","purl":"pkg:rpm/redhat/dotnet-apphost-pack-5.0-debuginfo","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-host","purl":"pkg:rpm/redhat/dotnet-host","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-host-debuginfo","purl":"pkg:rpm/redhat/dotnet-host-debuginfo","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-hostfxr-3.1","purl":"pkg:rpm/redhat/dotnet-hostfxr-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-hostfxr-3.1-debuginfo","purl":"pkg:rpm/redhat/dotnet-hostfxr-3.1-debuginfo","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-hostfxr-5.0","purl":"pkg:rpm/redhat/dotnet-hostfxr-5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-hostfxr-5.0-debuginfo","purl":"pkg:rpm/redhat/dotnet-hostfxr-5.0-debuginfo","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-3.1","purl":"pkg:rpm/redhat/dotnet-runtime-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.16-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-3.1-debuginfo","purl":"pkg:rpm/redhat/dotnet-runtime-3.1-debuginfo","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-5.0","purl":"pkg:rpm/redhat/dotnet-runtime-5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.7-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-runtime-5.0-debuginfo","purl":"pkg:rpm/redhat/dotnet-runtime-5.0-debuginfo","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.116-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-3.1","purl":"pkg:rpm/redhat/dotnet-sdk-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.116-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-sdk-3.1-debuginfo","purl":"pkg:rpm/redhat/dotnet-sdk-3.1-debuginfo","source":"RHSA-2021:2352"},{"ecosystem":"Red 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Hat:enterprise_linux:8::appstream","fixed":["0:3.1.116-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-templates-3.1","purl":"pkg:rpm/redhat/dotnet-templates-3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.204-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet-templates-5.0","purl":"pkg:rpm/redhat/dotnet-templates-5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.116-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet3.1","purl":"pkg:rpm/redhat/dotnet3.1","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.116-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet3.1-debuginfo","purl":"pkg:rpm/redhat/dotnet3.1-debuginfo","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:3.1.116-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet3.1-debugsource","purl":"pkg:rpm/redhat/dotnet3.1-debugsource","source":"RHSA-2021:2352"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.204-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet5.0","purl":"pkg:rpm/redhat/dotnet5.0","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.204-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet5.0-debuginfo","purl":"pkg:rpm/redhat/dotnet5.0-debuginfo","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.204-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"dotnet5.0-debugsource","purl":"pkg:rpm/redhat/dotnet5.0-debugsource","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:5.0.204-1.el8_4"],"introduced":["0"],"last_affected":[],"package":"netstandard-targeting-pack-2.1","purl":"pkg:rpm/redhat/netstandard-targeting-pack-2.1","source":"RHSA-2021:2353"},{"ecosystem":"Red Hat:rhel_dotnet:3.1::el7","fixed":["0:3.1.16-1.el7_9"],"introduced":["0"],"last_affected":[],"package":"rh-dotnet31-aspnetcore-runtime-3.1","purl":"pkg:rpm/redhat/rh-dotnet31-aspnetcore-runtime-3.1","source":"RHSA-2021:2350"},{"ecosystem":"Red Hat:rhel_dotnet:3.1::el7","fixed":["0:3.1.16-1.el7_9"],"introduced":["0"],"last_affected":[],"package":"rh-dotnet31-aspnetcore-targeting-pack-3.1","purl":"pkg:rpm/redhat/rh-dotnet31-aspnetcore-targeting-pack-3.1","source":"RHSA-2021:2350"},{"ecosystem":"Red Hat:rhel_dotnet:3.1::el7","fixed":["0:3.1.116-1.el7_9"],"introduced":["0"],"last_affected":[],"package":"rh-dotnet31-dotnet","purl":"pkg:rpm/redhat/rh-dotnet31-dotnet","source":"RHSA-2021:2350"},{"ecosystem":"Red Hat:rhel_dotnet:3.1::el7","fixed":["0:3.1.16-1.el7_9"],"introduced":["0"],"last_affected":[],"package":"rh-dotnet31-dotnet-apphost-pack-3.1","purl":"pkg:rpm/redhat/rh-dotnet31-dotnet-apphost-pack-3.1","source":"RHSA-2021:2350"}],"prev":{"headline":"Microsoft Windows NTFS Privilege Escalation","id":"CVE-2021-31956"},"products":[".NET 5.0",".NET Core 3.1","Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)","Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)","Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)","Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)","Visual Studio 2019 for Mac version 8.10"],"published":"2021-06-08","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":"Red Hat","prefix":"RHSA"},{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["Microsoft"]},"summary":"An attacker can cause a denial of service in applications using the .NET Core framework by exploiting a resource exhaustion flaw.","url":"https://insights.sbomify.com/CVE-2021-31957/"}