CVE-2021-44648 : Security Advisory and Response

GNOME gdk-pixbuf 2.42.6 is vulnerable to a heap-buffer overflow vulnerability when decoding the lzw compressed stream of image data in GIF files with lzw minimum code size equals to 12.

Understanding CVE-2021-44648

GNOME gdk-pixbuf 2.42.6 has a critical vulnerability that allows for a heap-buffer overflow when processing lzw compressed image data in GIF files.

What is CVE-2021-44648?

The vulnerability in GNOME gdk-pixbuf 2.42.6 enables a heap-buffer overflow issue during the decoding of lzw compressed image data in GIF files with a specific lzw code size.

The Impact of CVE-2021-44648

This vulnerability could be exploited by an attacker to execute arbitrary code, leading to potential system compromise, data theft, or service disruption.

Technical Details of CVE-2021-44648

GNOME gdk-pixbuf 2.42.6 vulnerability details

Vulnerability Description

The vulnerability occurs in the handling of lzw compressed image data, specifically when the lzw minimum code size is set to 12, leading to a heap-buffer overflow.

Affected Systems and Versions

Affected Version: 2.42.6 of GNOME gdk-pixbuf
Systems decoding lzw compressed stream in GIF files with lzw minimum code size 12

Exploitation Mechanism

Exploiting the vulnerability in the decoding process of lzw compressed stream of image data in GIF files with a minimum code size of 12

Mitigation and Prevention

Protecting systems from CVE-2021-44648

Immediate Steps to Take

Apply security patches provided by the vendor to address the vulnerability
Implement network security measures to detect and block malicious activities
Restrict access to vulnerable systems to authorized personnel only

Long-Term Security Practices

Conduct regular security assessments and audits to identify vulnerabilities
Educate users and IT staff about safe computing practices and threat awareness

Patching and Updates

Regularly update and patch software systems to ensure they are protected against known vulnerabilities