UBUNTU-CVE-2020-35512

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Source
https://ubuntu.com/security/CVE-2020-35512
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35512.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-35512
Upstream
Downstream
Related
Published
2021-02-15T17:15:00Z
Modified
2025-09-08T16:46:32Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors

References

Affected packages

Ubuntu:Pro:14.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.6.18-0ubuntu4.5+esm3?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

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
1.6.18-0ubuntu4.5+esm2
1.6.18-0ubuntu4.5+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dbus",
            "binary_version": "1.6.18-0ubuntu4.5+esm3"
        },
        {
            "binary_name": "dbus-x11",
            "binary_version": "1.6.18-0ubuntu4.5+esm3"
        },
        {
            "binary_name": "libdbus-1-3",
            "binary_version": "1.6.18-0ubuntu4.5+esm3"
        },
        {
            "binary_name": "libdbus-1-dev",
            "binary_version": "1.6.18-0ubuntu4.5+esm3"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.10.6-1ubuntu3.6+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.10.6-1ubuntu3.6+esm1

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
1.10.6-1ubuntu3.6

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "dbus",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
        },
        {
            "binary_name": "dbus-tests",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
        },
        {
            "binary_name": "dbus-user-session",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
        },
        {
            "binary_name": "dbus-x11",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
        },
        {
            "binary_name": "libdbus-1-3",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
        },
        {
            "binary_name": "libdbus-1-dev",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
        }
    ]
}

Ubuntu:18.04:LTS / dbus

Package

Name
dbus
Purl
pkg:deb/ubuntu/dbus@1.12.2-1ubuntu1.3?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.12.2-1ubuntu1.3

Affected versions

1.*

1.10.22-1ubuntu1
1.12.0-1ubuntu1
1.12.2-1ubuntu1
1.12.2-1ubuntu1.1
1.12.2-1ubuntu1.2

Ecosystem specific 

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

Ubuntu:20.04:LTS / dbus

Package

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

Affected ranges

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

Affected versions

1.*

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

Ecosystem specific 

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