{"api_version":"1","generated_at":"2026-07-23T15:27:34+00:00","cve":"CVE-2018-20349","urls":{"html":"https://cve.report/CVE-2018-20349","api":"https://cve.report/api/cve/CVE-2018-20349.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2018-20349","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-20349"},"summary":{"title":"CVE-2018-20349","description":"The igraph_i_strdiff function in igraph_trie.c in igraph through 0.7.1 has an NULL pointer dereference that allows attackers to cause a denial of service (application crash) via a crafted object.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2018-12-22 00:29:00","updated_at":"2023-11-07 02:56:00"},"problem_types":["CWE-476"],"metrics":[],"references":[{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NCGDUNQYLSZLSGN6JJBORVFW46U3A75Y/","name":"FEDORA-2019-060e7b383c","refsource":"","tags":[],"title":"[SECURITY] Fedora 30 Update: igraph-0.7.1-12.fc30 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NCGDUNQYLSZLSGN6JJBORVFW46U3A75Y/","name":"FEDORA-2019-060e7b383c","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 30 Update: igraph-0.7.1-12.fc30 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OWCGXEINKJM3JQUPVCSN4RBTRKWBTYI7/","name":"FEDORA-2019-5d52865475","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 29 Update: igraph-0.7.1-12.fc29 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OWCGXEINKJM3JQUPVCSN4RBTRKWBTYI7/","name":"FEDORA-2019-5d52865475","refsource":"","tags":[],"title":"[SECURITY] Fedora 29 Update: igraph-0.7.1-12.fc29 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/igraph/igraph/issues/1141","name":"https://github.com/igraph/igraph/issues/1141","refsource":"MISC","tags":["Exploit","Third Party Advisory"],"title":"NULL Pointer Dereference vulneribility in igraph_i_strdiff function · Issue #1141 · igraph/igraph · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.debian.org/debian-lts-announce/2019/12/msg00038.html","name":"[debian-lts-announce] 20191231 [SECURITY] [DLA 2055-1] igraph security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2055-1] igraph security update","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-20349","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20349","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2018","cve_id":"20349","vulnerable":"1","versionEndIncluding":"0.7.1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"igraph","cpe5":"igraph","cpe6":"*","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-2018-20349","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":"The igraph_i_strdiff function in igraph_trie.c in igraph through 0.7.1 has an NULL pointer dereference that allows attackers to cause a denial of service (application crash) via a crafted object."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://github.com/igraph/igraph/issues/1141","refsource":"MISC","url":"https://github.com/igraph/igraph/issues/1141"},{"refsource":"FEDORA","name":"FEDORA-2019-060e7b383c","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NCGDUNQYLSZLSGN6JJBORVFW46U3A75Y/"},{"refsource":"FEDORA","name":"FEDORA-2019-5d52865475","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OWCGXEINKJM3JQUPVCSN4RBTRKWBTYI7/"},{"refsource":"MLIST","name":"[debian-lts-announce] 20191231 [SECURITY] [DLA 2055-1] igraph security update","url":"https://lists.debian.org/debian-lts-announce/2019/12/msg00038.html"}]}},"nvd":{"publishedDate":"2018-12-22 00:29:00","lastModifiedDate":"2023-11-07 02:56:00","problem_types":["CWE-476"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":4.3},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"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:igraph:igraph:*:*:*:*:*:*:*:*","versionEndIncluding":"0.7.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2018","CveId":"20349","Ordinal":"140697","Title":"CVE-2018-20349","CVE":"CVE-2018-20349","Year":"2018"},"notes":[{"CveYear":"2018","CveId":"20349","Ordinal":"1","NoteData":"The igraph_i_strdiff function in igraph_trie.c in igraph through 0.7.1 has an NULL pointer dereference that allows attackers to cause a denial of service (application crash) via a crafted object.","Type":"Description","Title":null},{"CveYear":"2018","CveId":"20349","Ordinal":"2","NoteData":"2018-12-21","Type":"Other","Title":"Published"},{"CveYear":"2018","CveId":"20349","Ordinal":"3","NoteData":"2019-12-31","Type":"Other","Title":"Modified"}]}}}