CVE-2017-9525: n/a vulnerability

CVE-2017-9525: In the cron package through 3.0pl1-128 on Debian, and through 3.0pl1-128ubuntu2 on Ubuntu, the postinst mai...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 17:11 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw affects Debian and Ubuntu cron packaging scripts. A local user with crontab group privileges could potentially turn that access into root privileges through symlink abuse during unsafe ownership and permission changes. The sources do not show active exploitation, but root escalation on shared Linux systems is operationally serious. Exposure is most likely on older Debian or Ubuntu systems running the affected cron package versions, especially multi-user hosts where non-administrators have local access or crontab group membership. Treat this as a targeted remediation item for legacy Debian and Ubuntu estates. It is not internet-remote based on the supplied evidence, but it can turn limited local access into root control. Mitigation focus: Apply vendor-provided cron security updates for Debian or Ubuntu systems.; Review Debian LTS advisories DLA 1723-1 and DLA 2801-1 for package guidance.; Reduce crontab group membership to trusted administrative users only..

Prepared: Jun 13, 2026, 04:43 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Privilege behavior lookup

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CVE-2017-9525 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 9, 2017, 16:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
[debian-lts-announce] 20190321 [SECURITY] [DLA 1723-1] cron security updateCVE reference · mailing-list, x_refsource_MLIST
[debian-lts-announce] 20211030 [SECURITY] [DLA 2801-1] cron security updateCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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