{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2021-3905 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3905 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 23 Aug 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-2021-3905 and fix it if it is affected.\n\nWhat it is: CVE-2021-3905 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 23 Aug 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-2021-3905 in the wild and no public exploit code.\n\nAffected product: Canonical Ubuntu Linux. 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-2021-3905/ (Markdown: https://insights.sbomify.com/CVE-2021-3905/index.md)","id":"CVE-2021-3905","markdown":"https://insights.sbomify.com/CVE-2021-3905/index.md","name":"CVE-2021-3905","record":{"aliases":["GHSA-w2f8-jf7v-2cj4","OESA-2022-1778","RHBA-2022:0051","RHBA-2022:0052","RHBA-2022:5792"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Open vSwitch","requires_auth":"none","summary":"An attacker can exhaust system memory by sending fragmented IP packets, causing a denial of service in Open vSwitch.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"fedora","vendor":"fedoraproject"},{"product":"openvswitch","vendor":"openvswitch"},{"product":"enterprise_linux_fast_datapath","vendor":"redhat"}],"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-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.","ecosystems":["Red Hat:enterprise_linux:8::fastdatapath"],"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 openvswitch (ovs)","id":"CVE-2021-3905","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","fedoraproject:fedora"],"type":"denial_of_service","year":"2021"},"n_packages":27,"n_references":6,"next":{"headline":"Unrestricted Upload of File with Dangerous Type in bookstackapp/bookstack","id":"CVE-2021-3906"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"network-scripts-openvswitch2.13","purl":"pkg:rpm/redhat/network-scripts-openvswitch2.13","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"network-scripts-openvswitch2.15","purl":"pkg:rpm/redhat/network-scripts-openvswitch2.15","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"network-scripts-openvswitch2.16","purl":"pkg:rpm/redhat/network-scripts-openvswitch2.16","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.13","purl":"pkg:rpm/redhat/openvswitch2.13","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.13-debuginfo","purl":"pkg:rpm/redhat/openvswitch2.13-debuginfo","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.13-debugsource","purl":"pkg:rpm/redhat/openvswitch2.13-debugsource","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.13-devel","purl":"pkg:rpm/redhat/openvswitch2.13-devel","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.13-ipsec","purl":"pkg:rpm/redhat/openvswitch2.13-ipsec","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.13-test","purl":"pkg:rpm/redhat/openvswitch2.13-test","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.15","purl":"pkg:rpm/redhat/openvswitch2.15","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.15-debuginfo","purl":"pkg:rpm/redhat/openvswitch2.15-debuginfo","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.15-debugsource","purl":"pkg:rpm/redhat/openvswitch2.15-debugsource","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.15-devel","purl":"pkg:rpm/redhat/openvswitch2.15-devel","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.15-ipsec","purl":"pkg:rpm/redhat/openvswitch2.15-ipsec","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.15-test","purl":"pkg:rpm/redhat/openvswitch2.15-test","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.16","purl":"pkg:rpm/redhat/openvswitch2.16","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.16-debuginfo","purl":"pkg:rpm/redhat/openvswitch2.16-debuginfo","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.16-debugsource","purl":"pkg:rpm/redhat/openvswitch2.16-debugsource","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.16-devel","purl":"pkg:rpm/redhat/openvswitch2.16-devel","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.16-ipsec","purl":"pkg:rpm/redhat/openvswitch2.16-ipsec","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"openvswitch2.16-test","purl":"pkg:rpm/redhat/openvswitch2.16-test","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"python3-openvswitch2.13","purl":"pkg:rpm/redhat/python3-openvswitch2.13","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.13.0-139.el8fdp"],"introduced":["0"],"last_affected":[],"package":"python3-openvswitch2.13-debuginfo","purl":"pkg:rpm/redhat/python3-openvswitch2.13-debuginfo","source":"RHBA-2022:0051"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"python3-openvswitch2.15","purl":"pkg:rpm/redhat/python3-openvswitch2.15","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.15.0-55.el8fdp"],"introduced":["0"],"last_affected":[],"package":"python3-openvswitch2.15-debuginfo","purl":"pkg:rpm/redhat/python3-openvswitch2.15-debuginfo","source":"RHBA-2022:0052"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"python3-openvswitch2.16","purl":"pkg:rpm/redhat/python3-openvswitch2.16","source":"RHBA-2022:5792"},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","fixed":["0:2.16.0-86.el8fdp"],"introduced":["0"],"last_affected":[],"package":"python3-openvswitch2.16-debuginfo","purl":"pkg:rpm/redhat/python3-openvswitch2.16-debuginfo","source":"RHBA-2022:5792"}],"prev":{"headline":"Cross-site Scripting (XSS) - Stored in getgrav/grav","id":"CVE-2021-3904"},"products":["openvswitch (ovs)"],"published":"2022-08-23","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHBA"},{"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 exhaust system memory by sending fragmented IP packets, causing a denial of service in Open vSwitch.","url":"https://insights.sbomify.com/CVE-2021-3905/"}