{ "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. 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." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "refsource": "MISC", "name": "https://www.openwall.com/lists/oss-security/2019/06/11/2", "url": "https://www.openwall.com/lists/oss-security/2019/06/11/2" }, { "refsource": "MLIST", "name": "[oss-security] 20190611 CVE-2019-12749: DBusServer DBUS_COOKIE_SHA1 authentication bypass", "url": "http://www.openwall.com/lists/oss-security/2019/06/11/2" }, { "refsource": "UBUNTU", "name": "USN-4015-1", "url": "https://usn.ubuntu.com/4015-1/" }, { "refsource": "UBUNTU", "name": "USN-4015-2", "url": "https://usn.ubuntu.com/4015-2/" }, { "refsource": "DEBIAN", "name": "DSA-4462", "url": "https://www.debian.org/security/2019/dsa-4462" }, { "refsource": "BUGTRAQ", "name": "20190613 [SECURITY] [DSA 4462-1] dbus security update", "url": "https://seclists.org/bugtraq/2019/Jun/16" }, { "refsource": "BID", "name": "108751", "url": "http://www.securityfocus.com/bid/108751" }, { "refsource": "MLIST", "name": "[debian-lts-announce] 20190614 [SECURITY] [DLA 1818-1] dbus security update", "url": "https://lists.debian.org/debian-lts-announce/2019/06/msg00005.html" }, { "refsource": "FEDORA", "name": "FEDORA-2019-d5ded5326b", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/" }, { "refsource": "SUSE", "name": "openSUSE-SU-2019:1604", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00059.html" }, { "refsource": "SUSE", "name": "openSUSE-SU-2019:1671", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00092.html" }, { "refsource": "REDHAT", "name": "RHSA-2019:1726", "url": "https://access.redhat.com/errata/RHSA-2019:1726" }, { "refsource": "SUSE", "name": "openSUSE-SU-2019:1750", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00026.html" }, { "refsource": "GENTOO", "name": "GLSA-201909-08", "url": "https://security.gentoo.org/glsa/201909-08" }, { "refsource": "REDHAT", "name": "RHSA-2019:2868", "url": "https://access.redhat.com/errata/RHSA-2019:2868" }, { "refsource": "REDHAT", "name": "RHSA-2019:2870", "url": "https://access.redhat.com/errata/RHSA-2019:2870" }, { "refsource": "REDHAT", "name": "RHSA-2019:3707", "url": "https://access.redhat.com/errata/RHSA-2019:3707" } ] } }