USN-5244-1

Daniel Onaca discovered that DBus contained a use-after-free vulnerability, caused by the incorrect handling of usernames sharing the same UID. An attacker could possibly use this issue to cause DBus to crash, resulting in a denial of service.

References

Affected packages

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

{
    "binaries": [
        {
            "binary_version": "1.10.6-1ubuntu3.6+esm1",
            "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"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-35512"
        }
    ]
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5244-1.json"