{"answers":{"affected":"5 open source packages ship an affected version, including os-vif. It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-15753 in the wild and no public exploit code.","fix":"Upgrade os-vif to a fixed version for your release line: 1.15.2 or 1.17.0.","what":"CVE-2019-15753 is a critical vulnerability in n/a, published on 28 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-15753 and fix it if it is affected.\n\nWhat it is: CVE-2019-15753 is a critical vulnerability in n/a, published on 28 Aug 2019. 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-2019-15753 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- os-vif (PyPI): affected from 1.15.0; fixed in 1.15.2, 1.17.0\n- os-vif (PyPI): affected from 1.15.0; fixed in 1.15.2\n- os-vif (PyPI): affected from 1.15.0; fixed in 1.15.2\n- os-vif (PyPI): affected from 1.16.0; fixed in 1.17.0\n- os-vif (PyPI): affected from 1.16.0; fixed in 1.17.0\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-2019-15753/ (Markdown: https://insights.sbomify.com/CVE-2019-15753/index.md)","id":"CVE-2019-15753","markdown":"https://insights.sbomify.com/CVE-2019-15753/index.md","name":"CVE-2019-15753","record":{"aliases":["DEBIAN-CVE-2019-15753","GHSA-mcpw-cp35-p3h8","PYSEC-2026-440","UBUNTU-CVE-2019-15753"],"analysis":{"component_type":"cloud_service","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"OpenStack networking","requires_auth":"none","summary":"Hard-coded MAC aging in OpenStack os-vif linuxbridge backend causes network flooding, allowing cross-tenant packet sniffing and performance degradation.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"os-vif","vendor":"openstack"}],"cvss":{"score":9.1,"severity":"critical","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instances belonging to other tenants sharing the same network. Only deployments using the linuxbridge backend are affected. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py.","ecosystems":["PyPI"],"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":"OpenStack os-vif Ageing time of 0 disables linuxbridge MAC learning","id":"CVE-2019-15753","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"information_disclosure","year":"2019"},"n_packages":5,"n_references":5,"next":{"headline":"Null dereference in n/a","id":"CVE-2019-15757"},"packages":[{"ecosystem":"PyPI","fixed":["1.15.2","1.17.0"],"introduced":["1.15.0","1.16.0"],"last_affected":[],"package":"os-vif","purl":"pkg:pypi/os-vif","source":"PYSEC-2026-440"},{"ecosystem":"PyPI","fixed":["1.15.2"],"introduced":["1.15.0"],"last_affected":[],"package":"os-vif","purl":null,"source":"GHSA-mcpw-cp35-p3h8"},{"ecosystem":"PyPI","fixed":["1.15.2"],"introduced":["1.15.0"],"last_affected":[],"package":"os-vif","purl":"pkg:pypi/os-vif","source":"GHSA-mcpw-cp35-p3h8"},{"ecosystem":"PyPI","fixed":["1.17.0"],"introduced":["1.16.0"],"last_affected":[],"package":"os-vif","purl":null,"source":"GHSA-mcpw-cp35-p3h8"},{"ecosystem":"PyPI","fixed":["1.17.0"],"introduced":["1.16.0"],"last_affected":[],"package":"os-vif","purl":"pkg:pypi/os-vif","source":"GHSA-mcpw-cp35-p3h8"}],"prev":{"headline":"Docker Desktop Community Edition Privilege Escalation","id":"CVE-2019-15752"},"products":["n/a"],"published":"2019-08-28","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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"2024-08-05","vendors":["n/a"]},"summary":"Hard-coded MAC aging in OpenStack os-vif linuxbridge backend causes network flooding, allowing cross-tenant packet sniffing and performance degradation.","url":"https://insights.sbomify.com/CVE-2019-15753/"}