{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-27819 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-27819 is a medium-severity vulnerability in libxls, published on 23 Feb 2021. 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-2020-27819 and fix it if it is affected.\n\nWhat it is: CVE-2020-27819 is a medium-severity vulnerability in libxls, published on 23 Feb 2021. 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-2020-27819 in the wild and no public exploit code.\n\nAffected product: libxls. 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-2020-27819/ (Markdown: https://insights.sbomify.com/CVE-2020-27819/index.md)","id":"CVE-2020-27819","markdown":"https://insights.sbomify.com/CVE-2020-27819/index.md","name":"CVE-2020-27819","record":{"aliases":["GHSA-fp3r-w9w2-jg2f","JLSEC-2026-1294","UBUNTU-CVE-2020-27819","openSUSE-SU-2021:0812-1","openSUSE-SU-2024:11015-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Excel parsing library","requires_auth":"none","summary":"A remote attacker can cause a denial of service by providing a crafted XLS file to applications using the libxls library.","user_interaction":"required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"libxls","vendor":"libxls_project"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.","ecosystems":["openSUSE:Leap 15.2"],"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":"Null dereference in libxls","id":"CVE-2020-27819","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2020"},"n_packages":1,"n_references":1,"next":{"headline":"Use after free in kernel","id":"CVE-2020-27820"},"packages":[{"ecosystem":"openSUSE:Leap 15.2","fixed":["1.6.2-lp152.2.3.1"],"introduced":["0"],"last_affected":[],"package":"libxls","purl":"pkg:rpm/opensuse/libxls\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2021:0812-1"}],"prev":{"headline":"Denial of service in pngcheck","id":"CVE-2020-27818"},"products":["libxls"],"published":"2021-02-23","related":[{"cvss_score":8.8,"headline":"Memory corruption in libxls","id":"CVE-2017-2910","kev_date_added":null,"published":"2020-12-02"},{"cvss_score":8.8,"headline":"Use after free in n/a","id":"CVE-2018-20452","kev_date_added":null,"published":"2018-12-25"},{"cvss_score":8.8,"headline":"Integer overflow in libxls","id":"CVE-2017-12108","kev_date_added":null,"published":"2018-04-24"},{"cvss_score":8.8,"headline":"Integer overflow in libxls","id":"CVE-2017-12109","kev_date_added":null,"published":"2018-04-24"},{"cvss_score":8.8,"headline":"Integer overflow in libxls","id":"CVE-2017-12110","kev_date_added":null,"published":"2017-11-20"},{"cvss_score":8.8,"headline":"Memory corruption in libxls","id":"CVE-2017-12111","kev_date_added":null,"published":"2017-11-20"},{"cvss_score":8.8,"headline":"Memory corruption in libxls","id":"CVE-2017-2897","kev_date_added":null,"published":"2017-11-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2024-08-04","vendors":["n/a"]},"summary":"A remote attacker can cause a denial of service by providing a crafted XLS file to applications using the libxls library.","url":"https://insights.sbomify.com/CVE-2020-27819/"}