CVE-2020-35531 Explained : Impact and Mitigation

LibRaw has an out-of-bounds read vulnerability in the get_huffman_diff() function when processing image files.

Understanding CVE-2020-35531

This CVE involves an out-of-bounds read vulnerability in the LibRaw library.

What is CVE-2020-35531?

This vulnerability occurs in the get_huffman_diff() function of LibRaw, specifically in the file libraw\src\x3f\x3f_utils_patched.cpp, while reading data from image files.

The Impact of CVE-2020-35531

The vulnerability could allow an attacker to read data beyond the bounds of allocated memory, potentially leading to information disclosure or denial of service.

Technical Details of CVE-2020-35531

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability exists due to an out-of-bounds read issue within the get_huffman_diff() function of LibRaw.

Affected Systems and Versions

Product: LibRaw
Versions affected: 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 manipulating image files to trigger the out-of-bounds read in the get_huffman_diff() function.

Mitigation and Prevention

Protecting systems from CVE-2020-35531 is crucial to maintaining security.

Immediate Steps to Take

Apply the latest security updates provided by LibRaw to patch the vulnerability.
Monitor for any unusual activities that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and libraries to ensure all security patches are applied promptly.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories from LibRaw and promptly apply any patches or updates released to address vulnerabilities.