{"api_version":"1","generated_at":"2026-04-22T19:58:22+00:00","cve":"CVE-2020-35512","urls":{"html":"https://cve.report/CVE-2020-35512","api":"https://cve.report/api/cve/CVE-2020-35512.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-35512","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-35512"},"summary":{"title":"CVE-2020-35512","description":"A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2021-02-15 17:15:00","updated_at":"2023-12-27 16:36:00"},"problem_types":["CWE-416"],"metrics":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1909101","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1909101","refsource":"MISC","tags":[],"title":"1909101 – (CVE-2020-35512) CVE-2020-35512 dbus: users with the same numeric UID could lead to use-after-free and undefined behaviour","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128","name":"https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128","refsource":"MISC","tags":[],"title":"Dangling pointer access in dbus-userdb.c (#305) · Issues · dbus / dbus · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://bugs.gentoo.org/755392","name":"https://bugs.gentoo.org/755392","refsource":"MISC","tags":["Issue Tracking","Third Party Advisory"],"title":"755392 – (CVE-2020-35512) <sys-apps/dbus-1.12.20: use after free if duplicate UIDs (CVE-2020-35512)","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-35512","name":"https://security-tracker.debian.org/tracker/CVE-2020-35512","refsource":"MISC","tags":[],"title":"CVE-2020-35512","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-35512","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35512","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"35512","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"d-bus_project","cpe5":"d-bus","cpe6":"1.12.20","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35512","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"d-bus_project","cpe5":"d-bus","cpe6":"1.12.20","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35512","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"freedesktop","cpe5":"dbus","cpe6":"1.12.20","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35512","vulnerable":"-1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"35512","vulnerable":"0","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-35512","qid":"198777","title":"Ubuntu Security Notification for DBus Vulnerability (USN-5244-2)"},{"cve":"CVE-2020-35512","qid":"6140164","title":"AWS Bottlerocket Security Update for libdbus (GHSA-m7gr-wq6g-x327)"},{"cve":"CVE-2020-35512","qid":"670482","title":"EulerOS Security Update for dbus (EulerOS-SA-2021-2240)"},{"cve":"CVE-2020-35512","qid":"670508","title":"EulerOS Security Update for dbus (EulerOS-SA-2021-2266)"},{"cve":"CVE-2020-35512","qid":"672184","title":"EulerOS Security Update for dbus (EulerOS-SA-2022-2455)"},{"cve":"CVE-2020-35512","qid":"672244","title":"EulerOS Security Update for dbus (EulerOS-SA-2022-2605)"},{"cve":"CVE-2020-35512","qid":"672319","title":"EulerOS Security Update for dbus (EulerOS-SA-2022-2708)"},{"cve":"CVE-2020-35512","qid":"750737","title":"SUSE Enterprise Linux Security Update for dbus-1 (SUSE-SU-2021:2211-1)"},{"cve":"CVE-2020-35512","qid":"750752","title":"SUSE Enterprise Linux Security Update for dbus-1 (SUSE-SU-2021:2292-1)"},{"cve":"CVE-2020-35512","qid":"750755","title":"OpenSUSE Security Update for dbus-1 (openSUSE-SU-2021:2292-1)"},{"cve":"CVE-2020-35512","qid":"750855","title":"OpenSUSE Security Update for dbus-1 (openSUSE-SU-2021:1056-1)"},{"cve":"CVE-2020-35512","qid":"750870","title":"SUSE Enterprise Linux Security Update for dbus-1 (SUSE-SU-2021:2424-1)"},{"cve":"CVE-2020-35512","qid":"750909","title":"SUSE Enterprise Linux Security Update for dbus-1 (SUSE-SU-2021:2590-1)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2020-35512","ASSIGNER":"secalert@redhat.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"D-Bus Development branch","version":{"version_data":[{"version_value":"<= 1.13.16 (Fixed: >= 1.13.18)"}]}},{"product_name":"dbus-1.12.x stable branch","version":{"version_data":[{"version_value":"<= 1.12.18 (Fixed: >= 1.12.20)"}]}},{"product_name":"dbus-1.10.x and older branches (EOL)","version":{"version_data":[{"version_value":"<= 1.10.30 (Fixed: 1.10.32)"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Use-After-Free"}]}]},"references":{"reference_data":[{"refsource":"MISC","name":"https://bugs.gentoo.org/755392","url":"https://bugs.gentoo.org/755392"},{"refsource":"MISC","name":"https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128","url":"https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128"},{"refsource":"MISC","name":"https://bugzilla.redhat.com/show_bug.cgi?id=1909101","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1909101"},{"refsource":"MISC","name":"https://security-tracker.debian.org/tracker/CVE-2020-35512","url":"https://security-tracker.debian.org/tracker/CVE-2020-35512"}]},"description":{"description_data":[{"lang":"eng","value":"A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors"}]}},"nvd":{"publishedDate":"2021-02-15 17:15:00","lastModifiedDate":"2023-12-27 16:36:00","problem_types":["CWE-416"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","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:L/AC:L/Au:N/C:C/I:C/A:C","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE","baseScore":7.2},"severity":"HIGH","exploitabilityScore":3.9,"impactScore":10,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:freedesktop:dbus:1.12.20:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"35512","Ordinal":"194187","Title":"CVE-2020-35512","CVE":"CVE-2020-35512","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"35512","Ordinal":"1","NoteData":"A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors","Type":"Description","Title":null},{"CveYear":"2020","CveId":"35512","Ordinal":"2","NoteData":"2021-02-15","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"35512","Ordinal":"3","NoteData":"2021-03-08","Type":"Other","Title":"Modified"}]}}}