CVE-2019-19451 Explained : Impact and Mitigation

Launching GNOME Dia prior to 2019-11-27 with an invalid codepoint filename argument can lead to an infinite loop, causing system instability.

Understanding CVE-2019-19451

Launching GNOME Dia with specific parameters can trigger an infinite loop, potentially filling up the disk and rendering the system unusable.

What is CVE-2019-19451?

When GNOME Dia is started with an invalid codepoint filename argument, it can enter an endless loop, continuously generating text output to stdout. This issue affects specific Linux distribution packages with version numbers like 0.97.3.

The Impact of CVE-2019-19451

The vulnerability can lead to system instability and make the system unusable over time due to disk filling up.

Technical Details of CVE-2019-19451

Launching GNOME Dia with an invalid codepoint filename argument can have severe consequences.

Vulnerability Description

Launching GNOME Dia with an invalid codepoint filename argument results in an infinite loop, continuously generating text output to stdout, potentially leading to system instability.

Affected Systems and Versions

GNOME Dia versions before 2019-11-27
Specific Linux distribution packages with version numbers like 0.97.3

Exploitation Mechanism

Triggered by starting GNOME Dia with an invalid codepoint filename argument
Output written to disk via the system's logging facility, potentially with elevated privileges

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices can help mitigate the risks associated with CVE-2019-19451.

Immediate Steps to Take

Avoid launching GNOME Dia with invalid codepoint filename arguments
Regularly monitor disk space to prevent filling up
Implement access controls to limit privileges

Long-Term Security Practices

Keep software and systems up to date
Conduct regular security assessments and audits
Educate users on safe computing practices

Patching and Updates

Update GNOME Dia to versions released after 2019-11-27 to mitigate the vulnerability