{"id":"CVE-2019-12749","state":"PUBLISHED","title":"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), a","description":"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.","publishedAt":"2019-06-11T16:11:45.000Z","updatedAt":"2026-02-13T19:57:55.649Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://www.openwall.com/lists/oss-security/2019/06/11/2","http://www.openwall.com/lists/oss-security/2019/06/11/2","https://usn.ubuntu.com/4015-1/","https://usn.ubuntu.com/4015-2/","https://www.debian.org/security/2019/dsa-4462","https://seclists.org/bugtraq/2019/Jun/16","http://www.securityfocus.com/bid/108751","https://lists.debian.org/debian-lts-announce/2019/06/msg00005.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/","http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00059.html","http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00092.html","https://access.redhat.com/errata/RHSA-2019:1726","http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00026.html","https://security.gentoo.org/glsa/201909-08","https://access.redhat.com/errata/RHSA-2019:2868","https://access.redhat.com/errata/RHSA-2019:2870","https://access.redhat.com/errata/RHSA-2019:3707","https://security.netapp.com/advisory/ntap-20241206-0010/"],"weaknesses":["CWE-59"],"ingestedAt":"2026-10-29T19:45:24.933Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2019/12xxx/CVE-2019-12749.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2019-12749","state":"PUBLISHED","datePublished":"2019-06-11T16:11:45.000Z","dateUpdated":"2026-02-13T19:57:55.649Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2019-06-06T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://www.openwall.com/lists/oss-security/2019/06/11/2","tags":["x_refsource_MISC"]},{"url":"http://www.openwall.com/lists/oss-security/2019/06/11/2","name":"[oss-security] 20190611 CVE-2019-12749: DBusServer DBUS_COOKIE_SHA1 authentication bypass","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://usn.ubuntu.com/4015-1/","name":"USN-4015-1","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://usn.ubuntu.com/4015-2/","name":"USN-4015-2","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://www.debian.org/security/2019/dsa-4462","name":"DSA-4462","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"https://seclists.org/bugtraq/2019/Jun/16","name":"20190613 [SECURITY] [DSA 4462-1] dbus security update","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"http://www.securityfocus.com/bid/108751","name":"108751","tags":["vdb-entry","x_refsource_BID"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/06/msg00005.html","name":"[debian-lts-announce] 20190614 [SECURITY] [DLA 1818-1] dbus security update","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/","name":"FEDORA-2019-d5ded5326b","tags":["vendor-advisory","x_refsource_FEDORA"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00059.html","name":"openSUSE-SU-2019:1604","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00092.html","name":"openSUSE-SU-2019:1671","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://access.redhat.com/errata/RHSA-2019:1726","name":"RHSA-2019:1726","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00026.html","name":"openSUSE-SU-2019:1750","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://security.gentoo.org/glsa/201909-08","name":"GLSA-201909-08","tags":["vendor-advisory","x_refsource_GENTOO"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2868","name":"RHSA-2019:2868","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:2870","name":"RHSA-2019:2870","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2019:3707","name":"RHSA-2019:3707","tags":["vendor-advisory","x_refsource_REDHAT"]}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2019-11-06T00:07:24.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2019-12749","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":"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. 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