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Link Following Affecting cron package, versions <3.0pl1-128+deb9u2

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (26th percentile)
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NVD
6.7 medium

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  • Snyk ID SNYK-DEBIAN9-CRON-311941
  • published 9 Jun 2017
  • disclosed 9 Jun 2017
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Introduced: 9 Jun 2017

CVE-2017-9525 Open this link in a new tab
CWE-59 Open this link in a new tab

How to fix?

Upgrade Debian:9 cron to version 3.0pl1-128+deb9u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cron package and not the cron package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.