{"api_version":"1","generated_at":"2026-07-23T12:24:43+00:00","cve":"CVE-2017-18120","urls":{"html":"https://cve.report/CVE-2017-18120","api":"https://cve.report/api/cve/CVE-2017-18120.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2017-18120","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-18120"},"summary":{"title":"CVE-2017-18120","description":"A double-free bug in the read_gif function in gifread.c in gifsicle 1.90 allows a remote attacker to cause a denial-of-service attack or unspecified other impact via a maliciously crafted file, because last_name is mishandled, a different vulnerability than CVE-2017-1000421.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2018-02-02 09:29:00","updated_at":"2023-10-24 16:06:00"},"problem_types":["CWE-415"],"metrics":[],"references":[{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739","name":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739","refsource":"MISC","tags":["Mailing List","Third Party Advisory"],"title":"#878739 - gifsicle: double-free bug when running gifdiff - Debian Bug report logs","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/kohler/gifsicle/issues/117","name":"https://github.com/kohler/gifsicle/issues/117","refsource":"MISC","tags":["Third Party Advisory"],"title":"denial-of-service attack · Issue #117 · kohler/gifsicle · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120","name":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120","refsource":"MISC","tags":["Mailing List","Third Party Advisory"],"title":"#881120 - gifsicle: use after free while running gifsicle - Debian Bug report logs","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909","name":"https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"gif_read: Set last_name = NULL unconditionally. · kohler/gifsicle@118a460 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-18120","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18120","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2017","cve_id":"18120","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"gifsicle_project","cpe5":"gifsicle","cpe6":"1.90","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"18120","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"gifsicle_project","cpe5":"gifsicle","cpe6":"1.90","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2017","cve_id":"18120","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"lcdf","cpe5":"gifsicle","cpe6":"1.90","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2017-18120","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A double-free bug in the read_gif function in gifread.c in gifsicle 1.90 allows a remote attacker to cause a denial-of-service attack or unspecified other impact via a maliciously crafted file, because last_name is mishandled, a different vulnerability than CVE-2017-1000421."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739","refsource":"MISC","url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739"},{"name":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120","refsource":"MISC","url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120"},{"name":"https://github.com/kohler/gifsicle/issues/117","refsource":"MISC","url":"https://github.com/kohler/gifsicle/issues/117"},{"name":"https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909","refsource":"MISC","url":"https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909"}]}},"nvd":{"publishedDate":"2018-02-02 09:29:00","lastModifiedDate":"2023-10-24 16:06:00","problem_types":["CWE-415"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:lcdf:gifsicle:1.90:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2017","CveId":"18120","Ordinal":"122654","Title":"CVE-2017-18120","CVE":"CVE-2017-18120","Year":"2017"},"notes":[{"CveYear":"2017","CveId":"18120","Ordinal":"1","NoteData":"A double-free bug in the read_gif function in gifread.c in gifsicle 1.90 allows a remote attacker to cause a denial-of-service attack or unspecified other impact via a maliciously crafted file, because last_name is mishandled, a different vulnerability than CVE-2017-1000421.","Type":"Description","Title":null},{"CveYear":"2017","CveId":"18120","Ordinal":"2","NoteData":"2018-02-02","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"18120","Ordinal":"3","NoteData":"2018-02-02","Type":"Other","Title":"Modified"}]}}}