UBUNTU-CVE-2018-6558

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Source
https://ubuntu.com/security/CVE-2018-6558
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-6558.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-6558
Upstream
Published
2018-08-23T17:00:00Z
Modified
2025-07-16T07:52:41.866760Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and supplementary group IDs to the values associated with the root user, which allows attackers to gain privileges via a successful login through certain applications that use Linux-PAM (aka pam).

References

Affected packages

Ubuntu:18.04:LTS / fscrypt

Package

Name
fscrypt
Purl
pkg:deb/ubuntu/fscrypt@0.2.2-0ubuntu2.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.2.2-0ubuntu2.1

Affected versions

0.*

0.2.2-0ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.2.2-0ubuntu2.1",
            "binary_name": "fscrypt"
        },
        {
            "binary_version": "0.2.2-0ubuntu2.1",
            "binary_name": "golang-github-google-fscrypt-dev"
        },
        {
            "binary_version": "0.2.2-0ubuntu2.1",
            "binary_name": "libpam-fscrypt"
        }
    ]
}