CVE-2019-3466 Explained : Impact and Mitigation

CVE-2019-3466 pertains to a vulnerability in postgresql-common versions before 210, specifically related to the pg_ctlcluster script. This flaw could potentially lead to local privilege escalation.

Understanding CVE-2019-3466

The vulnerability in postgresql-common versions before 210 allowed the pg_ctlcluster script to improperly handle privileges, creating a risk of local privilege escalation.

What is CVE-2019-3466?

The flaw in the pg_ctlcluster script of postgresql-common versions before 210 could result in the escalation of local privileges due to inadequate privilege revocation during the creation of temporary directories.

The Impact of CVE-2019-3466

The vulnerability could be exploited by local attackers to gain elevated privileges on the system, potentially leading to unauthorized access and control.

Technical Details of CVE-2019-3466

The technical aspects of the CVE-2019-3466 vulnerability are as follows:

Vulnerability Description

The pg_ctlcluster script in postgresql-common versions prior to 210 did not properly drop privileges when creating temporary directories for sockets and statistics, allowing for potential local privilege escalation.

Affected Systems and Versions

Product: postgresql-common (Debian-specific Postgres management tools)
Vendor: n/a
Versions Affected: Versions before 210

Exploitation Mechanism

The flaw in the pg_ctlcluster script could be exploited by local attackers to manipulate temporary directories and gain escalated privileges on the system.

Mitigation and Prevention

To address CVE-2019-3466, consider the following mitigation strategies:

Immediate Steps to Take

Update postgresql-common to version 210 or later to mitigate the vulnerability.
Monitor system logs for any suspicious activities indicating privilege escalation attempts.

Long-Term Security Practices

Implement the principle of least privilege to restrict unnecessary access rights.
Regularly review and update privilege management policies to prevent similar vulnerabilities.

Patching and Updates

Apply security patches promptly to ensure that known vulnerabilities are addressed and system security is maintained.