CVE-2020-13790 : What You Need to Know

libjpeg-turbo 2.0.4 and mozjpeg 4.0.0 have a heap-based buffer over-read vulnerability in get_rgb_row() in rdppm.c when processing a malformed PPM input file.

Understanding CVE-2020-13790

This CVE involves a specific vulnerability in libjpeg-turbo and mozjpeg versions.

What is CVE-2020-13790?

CVE-2020-13790 is a heap-based buffer over-read vulnerability found in libjpeg-turbo 2.0.4 and mozjpeg 4.0.0 due to improper handling of malformed PPM input files.

The Impact of CVE-2020-13790

The vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the heap-based buffer over-read.

Technical Details of CVE-2020-13790

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability exists in the get_rgb_row() function in rdppm.c, leading to a heap-based buffer over-read.

Affected Systems and Versions

libjpeg-turbo 2.0.4
mozjpeg 4.0.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a specially designed malformed PPM input file to trigger the heap-based buffer over-read.

Mitigation and Prevention

Protecting systems from CVE-2020-13790 requires specific actions.

Immediate Steps to Take

Apply security patches provided by the respective vendors promptly.
Avoid opening or processing untrusted PPM files.
Monitor vendor advisories for updates and follow best security practices.

Long-Term Security Practices

Regularly update software and libraries to the latest versions.
Implement network security measures to detect and block malicious activities.
Conduct security assessments and audits periodically.

Patching and Updates

Check for and apply patches released by libjpeg-turbo, mozjpeg, and other affected vendors.