{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-18768 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2020-18768 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 22 Aug 2023. 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-2020-18768 and fix it if it is affected.\n\nWhat it is: CVE-2020-18768 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 22 Aug 2023. 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-18768 exists.\n\nAffected product: Libtiff Libtiff. 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-2020-18768/ (Markdown: https://insights.sbomify.com/CVE-2020-18768/index.md)","id":"CVE-2020-18768","markdown":"https://insights.sbomify.com/CVE-2020-18768/index.md","name":"CVE-2020-18768","record":{"aliases":["AZL-43876","AZL-44271","DEBIAN-CVE-2020-18768","GHSA-mqcp-f5vw-2vmj","JLSEC-2025-309"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"libtiff image library","requires_auth":"none","summary":"A heap buffer overflow in libtiff allows attackers to cause denial of service via crafted TIFF files, affecting applications using the library.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"libtiff","vendor":"libtiff"}],"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-787","name":"Out-of-bounds Write"}],"description":"There exists one heap buffer overflow in _TIFFmemcpy in tif_unix.c in libtiff 4.0.10, which allows an attacker to cause a denial-of-service through a crafted tiff file.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2020-18768","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"libtiff:libtiff","products":["libtiff:libtiff"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in n/a","id":"CVE-2020-18770"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2020-18766"},"products":["n/a"],"published":"2023-08-22","related":[{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2004-1308","kev_date_added":null,"published":"2004-12-22"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2004-0929","kev_date_added":null,"published":"2004-10-26"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-61144","kev_date_added":null,"published":"2026-02-23"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-9533","kev_date_added":null,"published":"2016-11-22"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-9534","kev_date_added":null,"published":"2016-11-22"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-9535","kev_date_added":null,"published":"2016-11-22"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-9536","kev_date_added":null,"published":"2016-11-22"}],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-10-04","vendors":["n/a"]},"summary":"A heap buffer overflow in libtiff allows attackers to cause denial of service via crafted TIFF files, affecting applications using the library.","url":"https://insights.sbomify.com/CVE-2020-18768/"}