{"id":"AZL-6371","summary":"CVE-2019-12749 affecting package dbus for versions less than 1.13.6-9","details":"dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.","modified":"2026-04-01T05:20:47.913463Z","published":"2019-06-11T17:29:00Z","upstream":["CVE-2019-12749"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12749"}],"affected":[{"package":{"name":"dbus","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/dbus"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.13.6-9"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6371.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}