CVE-2020-14409 : Exploit Details and Defense Strategies

SDL (Simple DirectMedia Layer) through 2.0.12 has an Integer Overflow (and resultant SDL_memcpy heap corruption) in SDL_BlitCopy in video/SDL_blit_copy.c via a crafted .BMP file.

Understanding CVE-2020-14409

SDL (Simple DirectMedia Layer) through version 2.0.12 is vulnerable to an Integer Overflow leading to heap corruption.

What is CVE-2020-14409?

CVE-2020-14409 is a vulnerability in SDL (Simple DirectMedia Layer) that allows an attacker to trigger an Integer Overflow and subsequent heap corruption by exploiting the SDL_BlitCopy function in video/SDL_blit_copy.c using a specially crafted .BMP file.

The Impact of CVE-2020-14409

This vulnerability can be exploited by an attacker to execute arbitrary code or cause a denial of service (DoS) condition on systems running the affected SDL versions.

Technical Details of CVE-2020-14409

SDL (Simple DirectMedia Layer) through version 2.0.12 is susceptible to an Integer Overflow leading to heap corruption.

Vulnerability Description

Integer Overflow in SDL_BlitCopy function
Resultant heap corruption via a crafted .BMP file

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions up to and including 2.0.12

Exploitation Mechanism

The vulnerability can be exploited by an attacker through a specially crafted .BMP file to trigger an Integer Overflow and subsequent heap corruption in the SDL_BlitCopy function.

Mitigation and Prevention

Immediate Steps to Take:

Apply security updates provided by SDL to patch the vulnerability
Avoid opening untrusted .BMP files or limit access to SDL functionality Long-Term Security Practices:
Regularly update SDL to the latest version
Implement proper input validation and sanitization to prevent malicious file execution
Monitor security advisories for SDL-related vulnerabilities
Educate users on safe handling of files and software
Consider using alternative libraries if SDL is not essential
Patching and Updates Ensure timely installation of security updates and patches released by SDL to address the CVE-2020-14409 vulnerability.