UBUNTU-CVE-2019-3842

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Source

https://ubuntu.com/security/CVE-2019-3842

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-3842.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2019-3842

Upstream

CVE-2019-3842

Downstream

USN-3938-1

Related

USN-3938-1

Published

2019-04-08T00:00:00Z

Modified

2025-09-08T16:45:14Z

Severity

7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
4.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
7.0 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

In systemd before v242-rc4, it was discovered that pamsystemd does not properly sanitize the environment before using the XDGSEAT variable. It is possible for an attacker, in some particular configurations, to set a XDGSEAT environment variable which allows for commands to be checked against polkit policies using the "allowactive" element rather than "allow_any".

References

Affected packages

Ubuntu:14.04:LTS / systemd

Package

Name: systemd
Purl: pkg:deb/ubuntu/systemd@204-5ubuntu20.31?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

204-5ubuntu20.31

Affected versions

Other

204-0ubuntu18

204-0ubuntu19

204-5ubuntu3

204-5ubuntu5

204-5ubuntu6

204-5ubuntu7

204-5ubuntu8

204-5ubuntu9

204-5ubuntu10

204-5ubuntu11

204-5ubuntu13

204-5ubuntu14

204-5ubuntu15

204-5ubuntu16

204-5ubuntu17

204-5ubuntu18

204-5ubuntu19

204-5ubuntu20

204-5ubuntu20.*

204-5ubuntu20.2

204-5ubuntu20.3

204-5ubuntu20.4

204-5ubuntu20.5

204-5ubuntu20.6

204-5ubuntu20.7

204-5ubuntu20.8

204-5ubuntu20.9

204-5ubuntu20.10

204-5ubuntu20.11

204-5ubuntu20.12

204-5ubuntu20.13

204-5ubuntu20.14

204-5ubuntu20.15

204-5ubuntu20.18

204-5ubuntu20.19

204-5ubuntu20.20

204-5ubuntu20.21

204-5ubuntu20.22

204-5ubuntu20.24

204-5ubuntu20.25

204-5ubuntu20.26

204-5ubuntu20.28

204-5ubuntu20.29

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-gudev-1.0",
            "binary_version": "1:204-5ubuntu20.31"
        },
        {
            "binary_name": "libgudev-1.0-0",
            "binary_version": "1:204-5ubuntu20.31"
        },
        {
            "binary_name": "libgudev-1.0-dev",
            "binary_version": "1:204-5ubuntu20.31"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-daemon-dev",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-daemon0",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-id128-0",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-id128-dev",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-journal-dev",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-journal0",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-login-dev",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libsystemd-login0",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libudev-dev",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "python-systemd",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "systemd",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "systemd-services",
            "binary_version": "204-5ubuntu20.31"
        },
        {
            "binary_name": "udev",
            "binary_version": "204-5ubuntu20.31"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / systemd

Package

Name: systemd
Purl: pkg:deb/ubuntu/systemd@229-4ubuntu21.21?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

229-4ubuntu21.21

Affected versions

Other

225-1ubuntu9

227-2ubuntu1

227-2ubuntu2

228-1ubuntu2

228-2ubuntu1

228-2ubuntu2

228-3ubuntu1

228-4ubuntu1

228-4ubuntu2

228-5ubuntu1

228-5ubuntu2

228-5ubuntu3

228-6ubuntu1

229-1ubuntu2

229-1ubuntu4

229-2ubuntu1

229-3ubuntu1

229-3ubuntu2

229-4ubuntu1

229-4ubuntu4

229-4ubuntu5

229-4ubuntu6

229-4ubuntu7

229-4ubuntu8

229-4ubuntu10

229-4ubuntu11

229-4ubuntu12

229-4ubuntu13

229-4ubuntu16

229-4ubuntu17

229-4ubuntu19

229-4ubuntu20

229-4ubuntu21

229-4ubuntu21.*

229-4ubuntu21.1

229-4ubuntu21.2

229-4ubuntu21.3

229-4ubuntu21.4

229-4ubuntu21.5

229-4ubuntu21.6

229-4ubuntu21.8

229-4ubuntu21.9

229-4ubuntu21.10

229-4ubuntu21.15

229-4ubuntu21.16

229-4ubuntu21.17

229-4ubuntu21.19

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libnss-myhostname",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libnss-mymachines",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libnss-resolve",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libsystemd-dev",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libsystemd0",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libudev-dev",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "systemd",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "systemd-container",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "systemd-coredump",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "systemd-journal-remote",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "systemd-sysv",
            "binary_version": "229-4ubuntu21.21"
        },
        {
            "binary_name": "udev",
            "binary_version": "229-4ubuntu21.21"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / systemd

Package

Name: systemd
Purl: pkg:deb/ubuntu/systemd@237-3ubuntu10.19?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

237-3ubuntu10.19

Affected versions

Other

234-2ubuntu12

235-2ubuntu3

235-3ubuntu2

235-3ubuntu3

237-3ubuntu3

237-3ubuntu4

237-3ubuntu6

237-3ubuntu7

237-3ubuntu8

237-3ubuntu10

237-3ubuntu10.*

237-3ubuntu10.2

237-3ubuntu10.3

237-3ubuntu10.4

237-3ubuntu10.6

237-3ubuntu10.9

237-3ubuntu10.11

237-3ubuntu10.12

237-3ubuntu10.13

237-3ubuntu10.15

237-3ubuntu10.17

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libnss-myhostname",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libnss-mymachines",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libnss-resolve",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libnss-systemd",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libsystemd-dev",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libsystemd0",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libudev-dev",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "systemd",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "systemd-container",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "systemd-coredump",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "systemd-journal-remote",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "systemd-sysv",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "systemd-tests",
            "binary_version": "237-3ubuntu10.19"
        },
        {
            "binary_name": "udev",
            "binary_version": "237-3ubuntu10.19"
        }
    ],
    "availability": "No subscription required"
}