CVE-2017-9525
First published: Fri Jun 09 2017(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cron | <=3.0pl1-128. | |
| Ubuntu Linux | ||
| Debian | ||
| Debian | =8.0 | |
| Debian | =9.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-9525?
CVE-2017-9525 is considered a high severity vulnerability due to the potential for privilege escalation.
How do I fix CVE-2017-9525?
To fix CVE-2017-9525, update the cron package to a version greater than 3.0pl1-128.
What type of attack is associated with CVE-2017-9525?
CVE-2017-9525 is vulnerable to symlink attacks that exploit unsafe chown and chmod usage.
What is the impact of exploiting CVE-2017-9525?
Exploiting CVE-2017-9525 allows an attacker to gain root privileges on vulnerable systems.
On which systems is CVE-2017-9525 applicable?
CVE-2017-9525 affects cron versions up to 3.0pl1-128 on Debian and Ubuntu systems.
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/description
- agent/event
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/cron project
- canonical/cron
- version/cron/3.0pl1-128.
- vendor/canonical
- canonical/ubuntu linux
- vendor/debian
- canonical/debian
- version/debian/8.0
- version/debian/9.0