{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2018-7456 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2018-7456 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 24 Feb 2018. 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-2018-7456 and fix it if it is affected.\n\nWhat it is: CVE-2018-7456 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 24 Feb 2018. 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-2018-7456 in the wild and no public exploit code.\n\nAffected product: Canonical Ubuntu 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-2018-7456/ (Markdown: https://insights.sbomify.com/CVE-2018-7456/index.md)","id":"CVE-2018-7456","markdown":"https://insights.sbomify.com/CVE-2018-7456/index.md","name":"CVE-2018-7456","record":{"aliases":["ALPINE-CVE-2018-7456","DEBIAN-CVE-2018-7456","DLA-1346-1","DLA-1347-1","GHSA-43j5-gmq7-54cr","MGASA-2018-0208","RHSA-2019:2051","UBUNTU-CVE-2018-7456"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"LibTIFF library","requires_auth":"none","summary":"A NULL pointer dereference in LibTIFF allows attackers to cause a denial of service via crafted TIFF files processed by the tiffinfo tool.","user_interaction":"required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"libtiff","vendor":"libtiff"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.)","ecosystems":["Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation"],"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 n/a","id":"CVE-2018-7456","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","libtiff:libtiff"],"type":"null_dereference","year":"2018"},"n_packages":8,"n_references":10,"next":{"headline":"SQL injection in n/a","id":"CVE-2018-7463"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3","purl":"pkg:rpm/redhat/compat-libtiff3","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3-debuginfo","purl":"pkg:rpm/redhat/compat-libtiff3-debuginfo","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3","purl":"pkg:rpm/redhat/compat-libtiff3","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3-debuginfo","purl":"pkg:rpm/redhat/compat-libtiff3-debuginfo","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3","purl":"pkg:rpm/redhat/compat-libtiff3","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3-debuginfo","purl":"pkg:rpm/redhat/compat-libtiff3-debuginfo","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3","purl":"pkg:rpm/redhat/compat-libtiff3","source":"RHSA-2019:2051"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["0:3.9.4-12.el7"],"introduced":["0"],"last_affected":[],"package":"compat-libtiff3-debuginfo","purl":"pkg:rpm/redhat/compat-libtiff3-debuginfo","source":"RHSA-2019:2051"}],"prev":{"headline":"Denial of service in n/a","id":"CVE-2018-7455"},"products":["n/a"],"published":"2018-02-24","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2024-08-05","vendors":["n/a"]},"summary":"A NULL pointer dereference in LibTIFF allows attackers to cause a denial of service via crafted TIFF files processed by the tiffinfo tool.","url":"https://insights.sbomify.com/CVE-2018-7456/"}