CVE-2020-35534 : Exploit Details and Defense Strategies

LibRaw has a memory corruption vulnerability in the "crxFreeSubbandData()" function when processing cr3 files.

Understanding CVE-2020-35534

In this CVE, a vulnerability in LibRaw can lead to memory corruption, posing a security risk.

What is CVE-2020-35534?

The vulnerability in LibRaw arises from a flaw in the "crxFreeSubbandData()" function within the crx.cpp file when handling cr3 files.

The Impact of CVE-2020-35534

This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial of service (DoS) condition on the affected system.

Technical Details of CVE-2020-35534

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in LibRaw is a memory corruption issue within the "crxFreeSubbandData()" function, which can be triggered when processing cr3 files.

Affected Systems and Versions

Product: LibRaw
Versions: LibRaw 0.21-Beta1, LibRaw 0.20.2, LibRaw 0.20.1, LibRaw 0.20.0, LibRaw 0.20-RC2

Exploitation Mechanism

The vulnerability can be exploited by a malicious actor by crafting a specially designed cr3 file to trigger the memory corruption flaw.

Mitigation and Prevention

Protecting systems from CVE-2020-35534 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Consider implementing file type validation mechanisms to prevent the processing of malicious files.

Long-Term Security Practices

Regularly update software and libraries to mitigate known vulnerabilities.
Conduct security assessments and code reviews to identify and address potential security weaknesses.

Patching and Updates

Stay informed about security updates and patches released by LibRaw.