{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-25631 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-25631 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-25631 is a high-severity vulnerability in Libreoffice Libreoffice, published on 3 May 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-25631 and fix it if it is affected.\n\nWhat it is: CVE-2021-25631 is a high-severity vulnerability in Libreoffice Libreoffice, published on 3 May 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-25631 in the wild and no public exploit code.\n\nAffected product: Libreoffice Libreoffice. 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-2021-25631/ (Markdown: https://insights.sbomify.com/CVE-2021-25631/index.md)","id":"CVE-2021-25631","markdown":"https://insights.sbomify.com/CVE-2021-25631/index.md","name":"CVE-2021-25631","record":{"aliases":["GHSA-8xj5-7228-hcfg"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"LibreOffice office suite","requires_auth":"none","summary":"Attackers can bypass executable extension denylists on Windows to launch malicious files, potentially executing arbitrary code.","user_interaction":"required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Document Fdn.","cpe":[{"product":"libreoffice","vendor":"libreoffice"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-184","name":"Incomplete List of Disallowed Inputs"}],"description":"In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"denylist of executable filename extensions possible to bypass under windows","id":"CVE-2021-25631","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"libreoffice:libreoffice","products":["libreoffice:libreoffice"],"type":"security_feature_bypass","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Content Manipulation with Double Certificate Attack","id":"CVE-2021-25633"},"packages":[],"prev":{"headline":"Privilege escalation in Collabora Online","id":"CVE-2021-25630"},"products":["LibreOffice"],"published":"2021-05-03","related":[{"cvss_score":10,"headline":"TLS certificate are not properly verified when utilizing LibreOfficeKit","id":"CVE-2024-5261","kev_date_added":null,"published":"2024-06-25"},{"cvss_score":9.8,"headline":"Windows 8.3 path equivalence handling flaw allows LibreLogo script execution","id":"CVE-2019-9855","kev_date_added":null,"published":"2019-09-06"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2018-14939","kev_date_added":null,"published":"2018-08-05"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-8358","kev_date_added":null,"published":"2017-04-30"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-7882","kev_date_added":null,"published":"2017-04-15"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-10327","kev_date_added":null,"published":"2017-04-14"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-7856","kev_date_added":null,"published":"2017-04-14"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2024-09-16","vendors":["The Document Foundation"]},"summary":"Attackers can bypass executable extension denylists on Windows to launch malicious files, potentially executing arbitrary code.","url":"https://insights.sbomify.com/CVE-2021-25631/"}