UBUNTU-CVE-2017-9525

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Source
https://ubuntu.com/security/CVE-2017-9525
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-9525.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2017-9525
Upstream
Downstream
Related
Published
2017-06-09T16:29:00Z
Modified
2025-10-24T04:46:21Z
Severity
  • 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

In the cron package through 3.0pl1-128 on Debian, and through 3.0pl1-128ubuntu2 on Ubuntu, the postinst maintainer script allows for group-crontab-to-root privilege escalation via symlink attacks against unsafe usage of the chown and chmod programs.

References

Affected packages

Ubuntu:14.04:LTS / cron

Package

Name
cron
Purl
pkg:deb/ubuntu/cron@3.0pl1-124ubuntu2?arch=source&distro=trusty

Affected ranges

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

Affected versions

3.*

3.0pl1-124ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0pl1-124ubuntu2",
            "binary_name": "cron"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-9525.json"

Ubuntu:Pro:16.04:LTS / cron

Package

Name
cron
Purl
pkg:deb/ubuntu/cron@3.0pl1-128ubuntu2+esm2?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.0pl1-128ubuntu2+esm2

Affected versions

3.*

3.0pl1-127ubuntu1
3.0pl1-128ubuntu1
3.0pl1-128ubuntu2
3.0pl1-128ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0pl1-128ubuntu2+esm2",
            "binary_name": "cron"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-9525.json"

Ubuntu:18.04:LTS / cron

Package

Name
cron
Purl
pkg:deb/ubuntu/cron@3.0pl1-128.1ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.0pl1-128.1ubuntu1.2

Affected versions

3.*

3.0pl1-128ubuntu5
3.0pl1-128.1ubuntu1
3.0pl1-128.1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0pl1-128.1ubuntu1.2",
            "binary_name": "cron"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-9525.json"