UBUNTU-CVE-2020-12049

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Source
https://ubuntu.com/security/CVE-2020-12049
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12049.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-12049
Upstream
Downstream
Related
Published
2020-06-08T17:15:00Z
Modified
2025-09-08T16:46:05Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.

References

Affected packages

Ubuntu:Pro:14.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.6.18-0ubuntu4.5+esm2?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.18-0ubuntu4.5+esm2

Affected versions

1.*

1.6.12-0ubuntu10
1.6.18-0ubuntu1
1.6.18-0ubuntu2
1.6.18-0ubuntu3
1.6.18-0ubuntu4
1.6.18-0ubuntu4.1
1.6.18-0ubuntu4.2
1.6.18-0ubuntu4.3
1.6.18-0ubuntu4.4
1.6.18-0ubuntu4.5
1.6.18-0ubuntu4.5+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.6.18-0ubuntu4.5+esm2",
            "binary_name": "dbus"
        },
        {
            "binary_version": "1.6.18-0ubuntu4.5+esm2",
            "binary_name": "dbus-x11"
        },
        {
            "binary_version": "1.6.18-0ubuntu4.5+esm2",
            "binary_name": "libdbus-1-3"
        },
        {
            "binary_version": "1.6.18-0ubuntu4.5+esm2",
            "binary_name": "libdbus-1-dev"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:16.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.10.6-1ubuntu3.6?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.10.6-1ubuntu3.6

Affected versions

1.*

1.10.0-1ubuntu1
1.10.4-1ubuntu2
1.10.6-1ubuntu1
1.10.6-1ubuntu2
1.10.6-1ubuntu3
1.10.6-1ubuntu3.1
1.10.6-1ubuntu3.3
1.10.6-1ubuntu3.4
1.10.6-1ubuntu3.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.10.6-1ubuntu3.6",
            "binary_name": "dbus"
        },
        {
            "binary_version": "1.10.6-1ubuntu3.6",
            "binary_name": "dbus-tests"
        },
        {
            "binary_version": "1.10.6-1ubuntu3.6",
            "binary_name": "dbus-user-session"
        },
        {
            "binary_version": "1.10.6-1ubuntu3.6",
            "binary_name": "dbus-x11"
        },
        {
            "binary_version": "1.10.6-1ubuntu3.6",
            "binary_name": "libdbus-1-3"
        },
        {
            "binary_version": "1.10.6-1ubuntu3.6",
            "binary_name": "libdbus-1-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.12.2-1ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.12.2-1ubuntu1.2

Affected versions

1.*

1.10.22-1ubuntu1
1.12.0-1ubuntu1
1.12.2-1ubuntu1
1.12.2-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.12.2-1ubuntu1.2",
            "binary_name": "dbus"
        },
        {
            "binary_version": "1.12.2-1ubuntu1.2",
            "binary_name": "dbus-tests"
        },
        {
            "binary_version": "1.12.2-1ubuntu1.2",
            "binary_name": "dbus-user-session"
        },
        {
            "binary_version": "1.12.2-1ubuntu1.2",
            "binary_name": "dbus-x11"
        },
        {
            "binary_version": "1.12.2-1ubuntu1.2",
            "binary_name": "libdbus-1-3"
        },
        {
            "binary_version": "1.12.2-1ubuntu1.2",
            "binary_name": "libdbus-1-dev"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.12.16-2ubuntu2.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.12.16-2ubuntu2.1

Affected versions

1.*

1.12.14-1ubuntu2
1.12.16-2ubuntu1
1.12.16-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.12.16-2ubuntu2.1",
            "binary_name": "dbus"
        },
        {
            "binary_version": "1.12.16-2ubuntu2.1",
            "binary_name": "dbus-tests"
        },
        {
            "binary_version": "1.12.16-2ubuntu2.1",
            "binary_name": "dbus-user-session"
        },
        {
            "binary_version": "1.12.16-2ubuntu2.1",
            "binary_name": "dbus-x11"
        },
        {
            "binary_version": "1.12.16-2ubuntu2.1",
            "binary_name": "libdbus-1-3"
        },
        {
            "binary_version": "1.12.16-2ubuntu2.1",
            "binary_name": "libdbus-1-dev"
        }
    ],
    "availability": "No subscription required"
}