CVE-2021-36083 : Security Advisory and Response

KDE KImageFormats 5.70.0 through 5.81.0 has a stack-based buffer overflow vulnerability in XCFImageFormat::loadTileRLE.

Understanding CVE-2021-36083

This CVE identifies a stack-based buffer overflow vulnerability in KDE KImageFormats 5.70.0 through 5.81.0, specifically in the XCFImageFormat::loadTileRLE function.

What is CVE-2021-36083?

The CVE-2021-36083 vulnerability exists in the mentioned versions of KDE KImageFormats due to an issue in the XCFImageFormat::loadTileRLE function, potentially allowing an attacker to execute arbitrary code.

The Impact of CVE-2021-36083

If exploited, this vulnerability could lead to a stack-based buffer overflow, resulting in potential execution of malicious code, denial of service, or information disclosure.

Technical Details of CVE-2021-36083

This section provides more technical insights into the vulnerability.

Vulnerability Description

The stack-based buffer overflow occurs in the XCFImageFormat::loadTileRLE function of KDE KImageFormats 5.70.0 through 5.81.0.

Affected Systems and Versions

KDE KImageFormats versions 5.70.0 through 5.81.0 are affected by this vulnerability.

Exploitation Mechanism

Exploitation of this vulnerability could involve crafting a specifically designed XCF image file to trigger the buffer overflow and potentially execute malicious code.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-36083, follow these steps:

Immediate Steps to Take

Update KDE KImageFormats to a patched version or apply vendor-supplied updates.
Consider implementing appropriate network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly update all software to the latest versions to avoid known vulnerabilities.
Implement security best practices such as code reviews and penetration testing.

Patching and Updates

Stay informed about security updates and patches released by KDE for KDE KImageFormats to address CVE-2021-36083.