CVE-2019-1010189 : Exploit Details and Defense Strategies

mgetty prior to version 1.2.1 is affected by an Infinite Loop vulnerability, leading to a denial-of-service (DoS) situation. The issue has been resolved in version 1.2.1.

Understanding CVE-2019-1010189

The vulnerability in mgetty before version 1.2.1 allows for a DoS attack due to an Infinite Loop issue in the g3/g32pbm.c component.

What is CVE-2019-1010189?

The vulnerability in mgetty prior to version 1.2.1 is classified as an Infinite Loop problem, causing the program to never terminate, resulting in a DoS situation. The attack vector requires local access and the opening of a specially crafted file.

The Impact of CVE-2019-1010189

The impact of this vulnerability is a DoS scenario where the affected program does not terminate, potentially disrupting system functionality.

Technical Details of CVE-2019-1010189

The technical details of the CVE-2019-1010189 vulnerability in mgetty are as follows:

Vulnerability Description

The vulnerability is due to an Infinite Loop issue in the g3/g32pbm.c component of mgetty, leading to a DoS condition.

Affected Systems and Versions

Product: mgetty
Vendor: mgetty
Versions Affected: prior to version 1.2.1

Exploitation Mechanism

To exploit this vulnerability, an attacker needs local access to the system and the ability to open a specifically crafted file.

Mitigation and Prevention

To address CVE-2019-1010189, follow these mitigation steps:

Immediate Steps to Take

Update mgetty to version 1.2.1 or later to eliminate the vulnerability.
Restrict access to vulnerable systems to trusted users only.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement strong file validation mechanisms to prevent the execution of malicious files.

Patching and Updates

Ensure timely patching and updates for mgetty to protect against known vulnerabilities.