{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2017-18078 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2017-18078 is a high-severity vulnerability in Debian Debian Linux, published on 29 Jan 2018. 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-2017-18078 and fix it if it is affected.\n\nWhat it is: CVE-2017-18078 is a high-severity vulnerability in Debian Debian Linux, published on 29 Jan 2018. 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-2017-18078 in the wild and no public exploit code.\n\nAffected product: Debian Debian 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-2017-18078/ (Markdown: https://insights.sbomify.com/CVE-2017-18078/index.md)","id":"CVE-2017-18078","markdown":"https://insights.sbomify.com/CVE-2017-18078/index.md","name":"CVE-2017-18078","record":{"aliases":["DEBIAN-CVE-2017-18078","GHSA-g2wx-phqf-j84q","SUSE-SU-2018:0546-1","UBUNTU-CVE-2017-18078"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["privilege_escalation","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"systemd tmpfiles","requires_auth":"low_privilege","summary":"Local attackers can bypass access restrictions and modify file ownership, such as /etc/passwd, if protected hardlinks are disabled.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"leap","vendor":"opensuse"},{"product":"systemd","vendor":"systemd_project"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.","ecosystems":["SUSE:Linux Enterprise Desktop 12 SP2","SUSE:Linux Enterprise Desktop 12 SP3","SUSE:Linux Enterprise Server 12 SP2","SUSE:Linux Enterprise Server 12 SP3","SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2","SUSE:Linux Enterprise Server for SAP Applications 12 SP2","SUSE:Linux Enterprise Server for SAP Applications 12 SP3","SUSE:Linux Enterprise Software Development Kit 12 SP2","SUSE:Linux Enterprise Software Development Kit 12 SP3"],"exploits":{"exploitdb":1,"first_seen":"2018-01-29","github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[{"date":"2018-01-29","kind":"exploitdb","ref":"43935","stars":null,"title":"systemd (systemd-tmpfiles) \u003c 236 - 'fs.protected_hardlinks=0' Local Privilege Escalation"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Privilege escalation in n/a","id":"CVE-2017-18078","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","opensuse:leap","systemd_project:systemd"],"type":"privilege_escalation","year":"2017"},"n_packages":9,"n_references":9,"next":{"headline":"Null dereference in n/a","id":"CVE-2017-18079"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP2","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP2","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP3","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP2","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20Raspberry%20Pi%2012%20SP2","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP2","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP2","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP2","source":"SUSE-SU-2018:0546-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP3","fixed":["228-150.32.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3","source":"SUSE-SU-2018:0546-1"}],"prev":{"headline":"ReDoS in brace-expansion","id":"CVE-2017-18077"},"products":["n/a"],"published":"2018-01-29","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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":"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)"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Local attackers can bypass access restrictions and modify file ownership, such as /etc/passwd, if protected hardlinks are disabled.","url":"https://insights.sbomify.com/CVE-2017-18078/"}