CVE-2020-24870 : What You Need to Know

Libraw before 0.20.1 has a stack buffer overflow vulnerability via LibRaw::identify_process_dng_fields in identify.cpp.

Understanding CVE-2020-24870

This CVE involves a specific vulnerability in the Libraw library.

What is CVE-2020-24870?

CVE-2020-24870 is a stack buffer overflow vulnerability found in Libraw before version 0.20.1. The issue arises from the function LibRaw::identify_process_dng_fields in the identify.cpp file.

The Impact of CVE-2020-24870

This vulnerability could potentially allow an attacker to execute arbitrary code or crash the application, leading to a denial of service (DoS) condition.

Technical Details of CVE-2020-24870

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in Libraw before 0.20.1 is due to a stack buffer overflow in the identify_process_dng_fields function in identify.cpp.

Affected Systems and Versions

Affected Version: Libraw before 0.20.1
Systems using the vulnerable versions of Libraw are at risk.

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious DNG file that triggers the stack buffer overflow when processed by the vulnerable function.

Mitigation and Prevention

Protecting systems from CVE-2020-24870 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Libraw to version 0.20.1 or later to mitigate the vulnerability.
Avoid opening untrusted DNG files to prevent exploitation.

Long-Term Security Practices

Regularly update software and libraries to the latest versions.
Implement proper input validation and boundary checks in applications to prevent buffer overflows.

Patching and Updates

Stay informed about security advisories and patches released by Libraw.
Apply security updates promptly to ensure protection against known vulnerabilities.