#VU63053 Use-after-free in cron (Debian package) - CVE-2019-9706

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Main Vulnerability Database Vulnerabilities #VU63053

#VU63053 Use-after-free in cron (Debian package) - CVE-2019-9706

Published: May 11, 2022


Vulnerability identifier: #VU63053
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-9706
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
cron (Debian package)
Software vendor:
Debian

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in force_rescan_user() function in Vixie Cron. A local user can write specially crafted data to the crontab file, trigger a use-after-free error and crash the daemon.


Remediation

Install updates from vendor's website.

External links