{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-4147 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-4147 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 25 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-4147 and fix it if it is affected.\n\nWhat it is: CVE-2021-4147 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 25 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-4147 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-4147/ (Markdown: https://insights.sbomify.com/CVE-2021-4147/index.md)","id":"CVE-2021-4147","markdown":"https://insights.sbomify.com/CVE-2021-4147/index.md","name":"CVE-2021-4147","record":{"aliases":["DEBIAN-CVE-2021-4147","GHSA-hh52-g3xv-6xxc","SUSE-SU-2022:0021-1","UBUNTU-CVE-2021-4147","openSUSE-SU-2022:0021-1","openSUSE-SU-2024:11758-1"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Virtualization management","requires_auth":"low_privilege","summary":"A malicious guest can cause the libvirtd host daemon to deadlock or crash by continuously rebooting, leading to a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"ontap_select_deploy_administration_utility","vendor":"netapp"},{"product":"libvirt","vendor":"redhat"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-667","name":"Improper Locking"}],"description":"A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.","ecosystems":["SUSE:Linux Enterprise Micro 5.1","SUSE:Linux Enterprise Module for Basesystem 15 SP3","SUSE:Linux Enterprise Module for Server Applications 15 SP3","openSUSE:Leap 15.3","openSUSE:Tumbleweed"],"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":"Denial of service in libvirt","id":"CVE-2021-4147","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","netapp:ontap_select_deploy_administration_utility","redhat:libvirt"],"type":"denial_of_service","year":"2021"},"n_packages":5,"n_references":3,"next":{"headline":"Denial of service in kernel","id":"CVE-2021-4148"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Micro 5.1","fixed":["7.1.0-6.11.1"],"introduced":["0"],"last_affected":[],"package":"libvirt","purl":"pkg:rpm/suse/libvirt\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.1","source":"SUSE-SU-2022:0021-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["7.1.0-6.11.1"],"introduced":["0"],"last_affected":[],"package":"libvirt","purl":"pkg:rpm/suse/libvirt\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2022:0021-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP3","fixed":["7.1.0-6.11.1"],"introduced":["0"],"last_affected":[],"package":"libvirt","purl":"pkg:rpm/suse/libvirt\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3","source":"SUSE-SU-2022:0021-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["7.1.0-6.11.1"],"introduced":["0"],"last_affected":[],"package":"libvirt","purl":"pkg:rpm/opensuse/libvirt\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2022:0021-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["8.0.0-1.1"],"introduced":["0"],"last_affected":[],"package":"libvirt","purl":"pkg:rpm/opensuse/libvirt\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:11758-1"}],"prev":{"headline":"Business Logic Errors in pimcore/pimcore","id":"CVE-2021-4146"},"products":["libvirt"],"published":"2022-03-25","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":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"A malicious guest can cause the libvirtd host daemon to deadlock or crash by continuously rebooting, leading to a denial of service.","url":"https://insights.sbomify.com/CVE-2021-4147/"}