{"answers":{"affected":"2 open source packages ship an affected version, including github.com/Yubico/yubihsm-connector. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-28484 in the wild and no public exploit code.","fix":"Upgrade github.com/Yubico/yubihsm-connector to 3.0.1 or later.","what":"CVE-2021-28484 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 14 Apr 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-2021-28484 and fix it if it is affected.\n\nWhat it is: CVE-2021-28484 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 14 Apr 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-2021-28484 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/Yubico/yubihsm-connector (Go): affected all versions; fixed in 3.0.1\n- github.com/Yubico/yubihsm-connector (Go): affected all versions; fixed in 3.0.1\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-2021-28484/ (Markdown: https://insights.sbomify.com/CVE-2021-28484/index.md)","id":"CVE-2021-28484","markdown":"https://insights.sbomify.com/CVE-2021-28484/index.md","name":"CVE-2021-28484","record":{"aliases":["GHSA-8m9g-647g-5pxw"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"YubiHSM connector","requires_auth":"none","summary":"An attacker can cause a denial of service in the YubiHSM connector by sending malformed requests, requiring a restart to recover.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"yubihsm_connector","vendor":"yubico"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"}],"description":"An issue was discovered in the /api/connector endpoint handler in Yubico yubihsm-connector before 3.0.1 (in YubiHSM SDK before 2021.04). The handler did not validate the length of the request, which can lead to a state where yubihsm-connector becomes stuck in a loop waiting for the YubiHSM to send it data, preventing any further operations until the yubihsm-connector is restarted. An attacker can send 0, 1, or 2 bytes to trigger this.","ecosystems":["Go"],"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":"Infinite loop in Yubico yubihsm-connector","id":"CVE-2021-28484","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Path traversal in n/a","id":"CVE-2021-28485"},"packages":[{"ecosystem":"Go","fixed":["3.0.1"],"introduced":["0"],"last_affected":[],"package":"github.com/Yubico/yubihsm-connector","purl":null,"source":"GHSA-8m9g-647g-5pxw"},{"ecosystem":"Go","fixed":["3.0.1"],"introduced":["0"],"last_affected":[],"package":"github.com/Yubico/yubihsm-connector","purl":"pkg:golang/github.com/Yubico/yubihsm-connector","source":"GHSA-8m9g-647g-5pxw"}],"prev":{"headline":"Microsoft Exchange Server Remote Code Execution Vulnerability","id":"CVE-2021-28483"},"products":["n/a"],"published":"2021-04-14","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":"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":"An attacker can cause a denial of service in the YubiHSM connector by sending malformed requests, requiring a restart to recover.","url":"https://insights.sbomify.com/CVE-2021-28484/"}