Vulnerability Details CVE-2019-12749
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 10.1%
CVSS Severity
CVSS v3 Score 7.1
CVSS v2 Score 3.6
Products affected by CVE-2019-12749
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cpe:2.3:a:freedesktop:dbus:0.1
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cpe:2.3:a:freedesktop:dbus:0.10
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cpe:2.3:a:freedesktop:dbus:0.11
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cpe:2.3:a:freedesktop:dbus:0.12
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cpe:2.3:a:freedesktop:dbus:0.13
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cpe:2.3:a:freedesktop:dbus:0.2
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cpe:2.3:a:freedesktop:dbus:0.20
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cpe:2.3:a:freedesktop:dbus:0.21
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cpe:2.3:a:freedesktop:dbus:0.22
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cpe:2.3:a:freedesktop:dbus:0.23
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cpe:2.3:a:freedesktop:dbus:0.23.1
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cpe:2.3:a:freedesktop:dbus:0.23.2
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cpe:2.3:a:freedesktop:dbus:0.23.3
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cpe:2.3:a:freedesktop:dbus:0.23.4
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cpe:2.3:a:freedesktop:dbus:0.3
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cpe:2.3:a:freedesktop:dbus:0.31
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cpe:2.3:a:freedesktop:dbus:0.32.0
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cpe:2.3:a:freedesktop:dbus:0.33.0
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cpe:2.3:a:freedesktop:dbus:0.35.0
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cpe:2.3:a:freedesktop:dbus:0.35.1
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cpe:2.3:a:freedesktop:dbus:0.35.2
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cpe:2.3:a:freedesktop:dbus:0.36.0
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cpe:2.3:a:freedesktop:dbus:0.36.1
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cpe:2.3:a:freedesktop:dbus:0.36.2
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cpe:2.3:a:freedesktop:dbus:0.4
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cpe:2.3:a:freedesktop:dbus:0.5
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cpe:2.3:a:freedesktop:dbus:0.50
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cpe:2.3:a:freedesktop:dbus:0.6
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cpe:2.3:a:freedesktop:dbus:0.60
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cpe:2.3:a:freedesktop:dbus:0.61
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cpe:2.3:a:freedesktop:dbus:0.62
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cpe:2.3:a:freedesktop:dbus:0.7
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cpe:2.3:a:freedesktop:dbus:0.8
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cpe:2.3:a:freedesktop:dbus:0.9
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cpe:2.3:a:freedesktop:dbus:0.90
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cpe:2.3:a:freedesktop:dbus:0.91
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cpe:2.3:a:freedesktop:dbus:0.92
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cpe:2.3:a:freedesktop:dbus:0.93
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cpe:2.3:a:freedesktop:dbus:0.94
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cpe:2.3:a:freedesktop:dbus:0.95
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cpe:2.3:a:freedesktop:dbus:1.0.0
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cpe:2.3:a:freedesktop:dbus:1.0.1
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cpe:2.3:a:freedesktop:dbus:1.0.2
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cpe:2.3:a:freedesktop:dbus:1.0.3
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cpe:2.3:a:freedesktop:dbus:1.1.0
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cpe:2.3:a:freedesktop:dbus:1.1.1
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cpe:2.3:a:freedesktop:dbus:1.1.2
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cpe:2.3:a:freedesktop:dbus:1.1.20
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cpe:2.3:a:freedesktop:dbus:1.1.3
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cpe:2.3:a:freedesktop:dbus:1.1.4
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cpe:2.3:a:freedesktop:dbus:1.10.0
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cpe:2.3:a:freedesktop:dbus:1.10.10
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cpe:2.3:a:freedesktop:dbus:1.10.12
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cpe:2.3:a:freedesktop:dbus:1.10.14
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cpe:2.3:a:freedesktop:dbus:1.10.16
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cpe:2.3:a:freedesktop:dbus:1.10.18
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cpe:2.3:a:freedesktop:dbus:1.10.2
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cpe:2.3:a:freedesktop:dbus:1.10.20
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cpe:2.3:a:freedesktop:dbus:1.10.22
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cpe:2.3:a:freedesktop:dbus:1.10.24
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cpe:2.3:a:freedesktop:dbus:1.10.26
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cpe:2.3:a:freedesktop:dbus:1.10.4
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cpe:2.3:a:freedesktop:dbus:1.10.6
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cpe:2.3:a:freedesktop:dbus:1.10.8
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cpe:2.3:a:freedesktop:dbus:1.12.0
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cpe:2.3:a:freedesktop:dbus:1.12.10
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cpe:2.3:a:freedesktop:dbus:1.12.12
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cpe:2.3:a:freedesktop:dbus:1.12.14
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cpe:2.3:a:freedesktop:dbus:1.12.2
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cpe:2.3:a:freedesktop:dbus:1.12.4
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cpe:2.3:a:freedesktop:dbus:1.12.6
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cpe:2.3:a:freedesktop:dbus:1.12.8
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cpe:2.3:a:freedesktop:dbus:1.13.0
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cpe:2.3:a:freedesktop:dbus:1.13.10
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cpe:2.3:a:freedesktop:dbus:1.13.2
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cpe:2.3:a:freedesktop:dbus:1.13.4
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cpe:2.3:a:freedesktop:dbus:1.13.6
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cpe:2.3:a:freedesktop:dbus:1.13.8
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cpe:2.3:a:freedesktop:dbus:1.2.1
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cpe:2.3:a:freedesktop:dbus:1.2.10
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cpe:2.3:a:freedesktop:dbus:1.2.12
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cpe:2.3:a:freedesktop:dbus:1.2.14
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cpe:2.3:a:freedesktop:dbus:1.2.16
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cpe:2.3:a:freedesktop:dbus:1.2.18
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cpe:2.3:a:freedesktop:dbus:1.2.2
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cpe:2.3:a:freedesktop:dbus:1.2.20
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cpe:2.3:a:freedesktop:dbus:1.2.22
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cpe:2.3:a:freedesktop:dbus:1.2.24
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cpe:2.3:a:freedesktop:dbus:1.2.26
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cpe:2.3:a:freedesktop:dbus:1.2.28
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cpe:2.3:a:freedesktop:dbus:1.2.3
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cpe:2.3:a:freedesktop:dbus:1.2.30
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cpe:2.3:a:freedesktop:dbus:1.2.4
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cpe:2.3:a:freedesktop:dbus:1.2.4.2
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cpe:2.3:a:freedesktop:dbus:1.2.4.4
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cpe:2.3:a:freedesktop:dbus:1.2.4.6
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cpe:2.3:a:freedesktop:dbus:1.2.6
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cpe:2.3:a:freedesktop:dbus:1.2.8
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cpe:2.3:a:freedesktop:dbus:1.3.0
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cpe:2.3:a:freedesktop:dbus:1.3.1
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cpe:2.3:a:freedesktop:dbus:1.4.0
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cpe:2.3:a:freedesktop:dbus:1.4.1
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cpe:2.3:a:freedesktop:dbus:1.4.10
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cpe:2.3:a:freedesktop:dbus:1.4.12
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cpe:2.3:a:freedesktop:dbus:1.4.14
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cpe:2.3:a:freedesktop:dbus:1.4.16
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cpe:2.3:a:freedesktop:dbus:1.4.18
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cpe:2.3:a:freedesktop:dbus:1.4.20
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cpe:2.3:a:freedesktop:dbus:1.4.22
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cpe:2.3:a:freedesktop:dbus:1.4.24
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cpe:2.3:a:freedesktop:dbus:1.4.26
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cpe:2.3:a:freedesktop:dbus:1.4.4
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cpe:2.3:a:freedesktop:dbus:1.4.6
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cpe:2.3:a:freedesktop:dbus:1.4.8
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cpe:2.3:a:freedesktop:dbus:1.5.0
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cpe:2.3:a:freedesktop:dbus:1.5.10
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cpe:2.3:a:freedesktop:dbus:1.5.12
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cpe:2.3:a:freedesktop:dbus:1.5.2
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cpe:2.3:a:freedesktop:dbus:1.5.4
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cpe:2.3:a:freedesktop:dbus:1.5.6
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cpe:2.3:a:freedesktop:dbus:1.5.8
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cpe:2.3:a:freedesktop:dbus:1.6.0
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cpe:2.3:a:freedesktop:dbus:1.6.10
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cpe:2.3:a:freedesktop:dbus:1.6.12
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cpe:2.3:a:freedesktop:dbus:1.6.14
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cpe:2.3:a:freedesktop:dbus:1.6.16
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cpe:2.3:a:freedesktop:dbus:1.6.18
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cpe:2.3:a:freedesktop:dbus:1.6.2
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cpe:2.3:a:freedesktop:dbus:1.6.20
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cpe:2.3:a:freedesktop:dbus:1.6.22
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cpe:2.3:a:freedesktop:dbus:1.6.24
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cpe:2.3:a:freedesktop:dbus:1.6.26
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cpe:2.3:a:freedesktop:dbus:1.6.28
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cpe:2.3:a:freedesktop:dbus:1.6.30
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cpe:2.3:a:freedesktop:dbus:1.6.4
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cpe:2.3:a:freedesktop:dbus:1.6.6
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cpe:2.3:a:freedesktop:dbus:1.6.8
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cpe:2.3:a:freedesktop:dbus:1.7.0
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cpe:2.3:a:freedesktop:dbus:1.7.10
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cpe:2.3:a:freedesktop:dbus:1.7.2
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cpe:2.3:a:freedesktop:dbus:1.7.4
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cpe:2.3:a:freedesktop:dbus:1.7.6
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cpe:2.3:a:freedesktop:dbus:1.7.8
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cpe:2.3:a:freedesktop:dbus:1.8.0
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cpe:2.3:a:freedesktop:dbus:1.8.10
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cpe:2.3:a:freedesktop:dbus:1.8.12
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cpe:2.3:a:freedesktop:dbus:1.8.14
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cpe:2.3:a:freedesktop:dbus:1.8.16
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cpe:2.3:a:freedesktop:dbus:1.8.18
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cpe:2.3:a:freedesktop:dbus:1.8.2
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cpe:2.3:a:freedesktop:dbus:1.8.20
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cpe:2.3:a:freedesktop:dbus:1.8.22
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cpe:2.3:a:freedesktop:dbus:1.8.4
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cpe:2.3:a:freedesktop:dbus:1.8.6
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cpe:2.3:a:freedesktop:dbus:1.8.8
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cpe:2.3:a:freedesktop:dbus:1.9.0
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cpe:2.3:a:freedesktop:dbus:1.9.10
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cpe:2.3:a:freedesktop:dbus:1.9.12
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cpe:2.3:a:freedesktop:dbus:1.9.14
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cpe:2.3:a:freedesktop:dbus:1.9.16
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cpe:2.3:a:freedesktop:dbus:1.9.18
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cpe:2.3:a:freedesktop:dbus:1.9.2
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cpe:2.3:a:freedesktop:dbus:1.9.20
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cpe:2.3:a:freedesktop:dbus:1.9.4
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cpe:2.3:a:freedesktop:dbus:1.9.6
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cpe:2.3:a:freedesktop:dbus:1.9.8
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:18.10
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cpe:2.3:o:canonical:ubuntu_linux:19.04