{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3429 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-3429 is a medium-severity vulnerability in Canonical Ltd. cloud-init, published on 19 Apr 2023. 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-2021-3429 and fix it if it is affected.\n\nWhat it is: CVE-2021-3429 is a medium-severity vulnerability in Canonical Ltd. cloud-init, published on 19 Apr 2023. 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-2021-3429 in the wild and no public exploit code.\n\nAffected product: Canonical Ltd. cloud-init. 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-2021-3429/ (Markdown: https://insights.sbomify.com/CVE-2021-3429/index.md)","id":"CVE-2021-3429","markdown":"https://insights.sbomify.com/CVE-2021-3429/index.md","name":"CVE-2021-3429","record":{"aliases":["CLEANSTART-2024-OZ46983","DEBIAN-CVE-2021-3429","DLA-2601-1","GHSA-jj89-4799-j2qv","MGASA-2021-0494","OESA-2021-1372","RHSA-2021:3081","RHSA-2021:3177","RHSA-2021:3371","RLSA-2021:3081","UBUNTU-CVE-2021-3429"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["data_read","account_takeover"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"cloud-init","requires_auth":"low_privilege","summary":"Local attackers can read world-readable logs to obtain random passwords, enabling unauthorized login as other users.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"canonical","cpe":[{"product":"cloud-init","vendor":"canonical"}],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-532","name":"Insertion of Sensitive Information into Log File"}],"description":"When instructing cloud-init to set a random password for a new user account, versions before 21.2 would write that password to the world-readable log file /var/log/cloud-init-output.log. This could allow a local user to log in as another user.","ecosystems":["Red Hat:enterprise_linux:8::appstream","Red Hat:rhel_eus:8.1::appstream","Red Hat:rhel_eus:8.2::appstream","Rocky Linux:8"],"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":"sensitive data exposure in cloud-init logs","id":"CVE-2021-3429","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2021"},"n_packages":4,"n_references":1,"next":{"headline":"BT: Assertion failure on repeated LL_CONNECTION_PARAM_REQ","id":"CVE-2021-3430"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:20.3-10.el8_4.5"],"introduced":["0"],"last_affected":[],"package":"cloud-init","purl":"pkg:rpm/redhat/cloud-init","source":"RHSA-2021:3081"},{"ecosystem":"Red Hat:rhel_eus:8.1::appstream","fixed":["0:18.5-7.el8_1.6"],"introduced":["0"],"last_affected":[],"package":"cloud-init","purl":"pkg:rpm/redhat/cloud-init","source":"RHSA-2021:3177"},{"ecosystem":"Red Hat:rhel_eus:8.2::appstream","fixed":["0:18.5-12.el8_2.10"],"introduced":["0"],"last_affected":[],"package":"cloud-init","purl":"pkg:rpm/redhat/cloud-init","source":"RHSA-2021:3371"},{"ecosystem":"Rocky Linux:8","fixed":["0:20.3-10.el8_4.5"],"introduced":["0"],"last_affected":[],"package":"cloud-init","purl":"pkg:rpm/rocky-linux/cloud-init?distro=rocky-linux-8-4-x86-64-legacy\u0026epoch=0","source":"RLSA-2021:3081"}],"prev":{"headline":"Integer overflow in kernel","id":"CVE-2021-3428"},"products":["cloud-init"],"published":"2023-04-19","related":[{"cvss_score":8.8,"headline":"Hardcoded credentials in cloud-init","id":"CVE-2024-6174","kev_date_added":null,"published":"2025-06-26"},{"cvss_score":8.8,"headline":"Privilege escalation in cloud-init","id":"CVE-2012-6639","kev_date_added":null,"published":"2019-11-25"},{"cvss_score":5.9,"headline":"Privilege escalation in cloud-init","id":"CVE-2024-11584","kev_date_added":null,"published":"2025-06-26"},{"cvss_score":5.5,"headline":"sensitive data exposure in cloud-init logs","id":"CVE-2023-1786","kev_date_added":null,"published":"2023-04-26"},{"cvss_score":5.5,"headline":"sensitive data exposure in cloud-init logs","id":"CVE-2022-2084","kev_date_added":null,"published":"2023-04-19"},{"cvss_score":5.5,"headline":"Weak cryptography in n/a","id":"CVE-2020-8631","kev_date_added":null,"published":"2020-02-05"}],"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":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-05","vendors":["Canonical Ltd."]},"summary":"Local attackers can read world-readable logs to obtain random passwords, enabling unauthorized login as other users.","url":"https://insights.sbomify.com/CVE-2021-3429/"}