{"answers":{"affected":"2 open source packages ship an affected version, including IpMatcher. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-33318 in the wild and no public exploit code.","fix":"Upgrade IpMatcher to 1.0.4.2 or later.","what":"CVE-2021-33318 is a critical vulnerability in n/a, published on 16 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-33318 and fix it if it is affected.\n\nWhat it is: CVE-2021-33318 is a critical vulnerability in n/a, published on 16 May 2022. 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-2021-33318 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- IpMatcher (NuGet): affected all versions; fixed in 1.0.4.2\n- IpMatcher (NuGet): affected all versions; fixed in 1.0.4.2\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-2021-33318/ (Markdown: https://insights.sbomify.com/CVE-2021-33318/index.md)","id":"CVE-2021-33318","markdown":"https://insights.sbomify.com/CVE-2021-33318/index.md","name":"CVE-2021-33318","record":{"aliases":["GHSA-qj93-37f5-mr29"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"C# IP Matcher Library","requires_auth":"none","summary":"Insufficient input validation in WatsonWebserver and IpMatcher allows bypassing IP-based access controls by manipulating IP address and netmask inputs.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ipmatcher","vendor":"ipmatcher_project"},{"product":"watsonwebserver","vendor":"watsonwebserver_project"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-704","name":"Incorrect Type Conversion or Cast"}],"description":"An Input Validation Vulnerability exists in Joel Christner .NET C# packages WatsonWebserver, IpMatcher 1.0.4.1 and below (IpMatcher) and 4.1.3 and below (WatsonWebserver) due to insufficient validation of input IP addresses and netmasks against the internal Matcher list of IP addresses and subnets.","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 Input Validation in IpMatcher","id":"CVE-2021-33318","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"other","year":"2021"},"n_packages":2,"n_references":4,"next":{"headline":"Liferay Portal and Liferay DXP vulnerable to email spam via lack of flagging rate","id":"CVE-2021-33320"},"packages":[{"ecosystem":"NuGet","fixed":["1.0.4.2"],"introduced":["0"],"last_affected":[],"package":"IpMatcher","purl":null,"source":"GHSA-qj93-37f5-mr29"},{"ecosystem":"NuGet","fixed":["1.0.4.2"],"introduced":["0"],"last_affected":[],"package":"IpMatcher","purl":"pkg:nuget/IpMatcher","source":"GHSA-qj93-37f5-mr29"}],"prev":{"headline":"Null dereference in n/a","id":"CVE-2021-33317"},"products":["n/a"],"published":"2022-05-16","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":"2024-08-03","vendors":["n/a"]},"summary":"Insufficient input validation in WatsonWebserver and IpMatcher allows bypassing IP-based access controls by manipulating IP address and netmask inputs.","url":"https://insights.sbomify.com/CVE-2021-33318/"}