CVE-2019-9706 Explained : Impact and Mitigation

Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service due to a force_rescan_user error.

Understanding CVE-2019-9706

Vixie Cron is vulnerable to a denial of service attack when used by local users, leading to a use-after-free condition and crashing of the daemon.

What is CVE-2019-9706?

Vixie Cron version 3.0pl1-133 in Debian is susceptible to a denial of service attack due to a force_rescan_user error.

The Impact of CVE-2019-9706

The vulnerability can be exploited by local users, potentially causing a use-after-free condition and crashing the daemon.

Technical Details of CVE-2019-9706

Vixie Cron vulnerability details and affected systems.

Vulnerability Description

The vulnerability in Vixie Cron version 3.0pl1-133 allows local users to trigger a denial of service attack, leading to a use-after-free condition and daemon crash.

Affected Systems and Versions

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Vendor: N/A
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Exploitation Mechanism

The vulnerability is exploited by local users through a force_rescan_user error, resulting in a denial of service attack.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2019-9706 vulnerability.

Immediate Steps to Take

Update Vixie Cron to a patched version.
Monitor system logs for any unusual activity.
Restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch all software components.
Implement the principle of least privilege for user access.
Conduct regular security audits and vulnerability assessments.

Patching and Updates

Apply the latest security updates and patches provided by the vendor.