{"answers":{"affected":"It affects 14 products.","exploited":"There is no known exploitation of CVE-2021-31566 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-31566 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 23 Aug 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-31566 and fix it if it is affected.\n\nWhat it is: CVE-2021-31566 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 23 Aug 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-31566 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-2021-31566/ (Markdown: https://insights.sbomify.com/CVE-2021-31566/index.md)","id":"CVE-2021-31566","markdown":"https://insights.sbomify.com/CVE-2021-31566/index.md","name":"CVE-2021-31566","record":{"aliases":["ALPINE-CVE-2021-31566","CLSA-2026-1777307149","CLSA-2026-1777544831","DEBIAN-CVE-2021-31566","GHSA-mg62-fpgc-6hjj","JLSEC-2025-236","SUSE-SU-2022:3935-1","SUSE-SU-2022:3936-1","UBUNTU-CVE-2021-31566"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["privilege_escalation","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"libarchive library","requires_auth":"none","summary":"A local attacker can exploit improper link resolution in libarchive to modify file permissions and gain privileges by tricking a user into extracting a malicious archive.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"libarchive","vendor":"libarchive"},{"product":"codeready_linux_builder","vendor":"redhat"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_eus","vendor":"redhat"},{"product":"enterprise_linux_for_ibm_z_systems","vendor":"redhat"},{"product":"enterprise_linux_for_ibm_z_systems_eus","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian","vendor":"redhat"},{"product":"enterprise_linux_for_power_little_endian_eus","vendor":"redhat"},{"product":"enterprise_linux_server_aus","vendor":"redhat"},{"product":"enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","vendor":"redhat"},{"product":"enterprise_linux_server_tus","vendor":"redhat"},{"product":"universal_forwarder","vendor":"splunk"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.","ecosystems":["SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Module for Basesystem 15 SP3","SUSE:Linux Enterprise Module for Basesystem 15 SP4","SUSE:Linux Enterprise Module for Development Tools 15 SP3","SUSE:Linux Enterprise Module for Development Tools 15 SP4","openSUSE:Leap 15.3","openSUSE:Leap 15.4"],"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":"Path traversal in libarchive","id":"CVE-2021-31566","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","libarchive:libarchive","redhat:enterprise_linux","redhat:enterprise_linux_eus","redhat:enterprise_linux_for_ibm_z_systems","redhat:enterprise_linux_for_ibm_z_systems_eus","redhat:enterprise_linux_for_power_little_endian","redhat:enterprise_linux_for_power_little_endian_eus","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions","redhat:enterprise_linux_server_tus","splunk:universal_forwarder"],"type":"path_traversal","year":"2021"},"n_packages":7,"n_references":5,"next":{"headline":"WordPress Download Monitor plugin \u003c= 4.4.6 - Authenticated Arbitrary File Download vulnerability","id":"CVE-2021-31567"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["3.5.1-150400.3.9.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/suse/libarchive\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2022:3936-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["3.4.2-150200.4.12.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/suse/libarchive\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2022:3935-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP4","fixed":["3.5.1-150400.3.9.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/suse/libarchive\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4","source":"SUSE-SU-2022:3936-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP3","fixed":["3.4.2-150200.4.12.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/suse/libarchive\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3","source":"SUSE-SU-2022:3935-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP4","fixed":["3.5.1-150400.3.9.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/suse/libarchive\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP4","source":"SUSE-SU-2022:3936-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["3.4.2-150200.4.12.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/opensuse/libarchive\u0026distro=openSUSE%20Leap%2015.3","source":"SUSE-SU-2022:3935-1"},{"ecosystem":"openSUSE:Leap 15.4","fixed":["3.5.1-150400.3.9.1"],"introduced":["0"],"last_affected":[],"package":"libarchive","purl":"pkg:rpm/opensuse/libarchive\u0026distro=openSUSE%20Leap%2015.4","source":"SUSE-SU-2022:3936-1"}],"prev":{"headline":"Fresenius Kabi Agilia Connect Infusion System use of a broken or risky cryptographic algorithm","id":"CVE-2021-31562"},"products":["libarchive"],"published":"2022-08-23","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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A local attacker can exploit improper link resolution in libarchive to modify file permissions and gain privileges by tricking a user into extracting a malicious archive.","url":"https://insights.sbomify.com/CVE-2021-31566/"}