UBUNTU-CVE-2017-18188

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Source
https://ubuntu.com/security/CVE-2017-18188
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-18188.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-18188
Upstream
Published
2018-02-14T20:29:00Z
Modified
2025-10-24T04:46:39Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows local users to obtain ownership of arbitrary files by creating a hard link inside a directory on which "chown -R" will be run.

References

Affected packages

Ubuntu:20.04:LTS / opentmpfiles

Package

Name
opentmpfiles
Purl
pkg:deb/ubuntu/opentmpfiles@0.2+2019.05.21.git.44a55796ba-2?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.2+2019.05.21.git.44a55796ba-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "opentmpfiles",
            "binary_version": "0.2+2019.05.21.git.44a55796ba-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-18188.json"