CVE-2020-7696 Explained : Impact and Mitigation

CVE-2020-7696 is a vulnerability affecting all versions of the package react-native-fast-image, potentially leading to information exposure.

Understanding CVE-2020-7696

This CVE involves a security issue in the react-native-fast-image package that can result in the leakage of sensitive information.

What is CVE-2020-7696?

This vulnerability allows subsequent images to reuse the headers of the initially loaded image, potentially exposing sensitive data like credentials or session tokens.

The Impact of CVE-2020-7696

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 5.3. It poses a risk of low confidentiality impact and no integrity impact.

Technical Details of CVE-2020-7696

This section provides more in-depth technical details about the CVE.

Vulnerability Description

The vulnerability in react-native-fast-image allows all subsequent images to utilize the headers of the first loaded image, potentially leaking sensitive information to other servers.

Affected Systems and Versions

Package: react-native-fast-image
Versions: All versions

Exploitation Mechanism

The vulnerability can be exploited by loading an image with specific headers, causing subsequent images to inherit the same headers and potentially leak sensitive data.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-7696.

Immediate Steps to Take

Update the react-native-fast-image package to the latest secure version.
Avoid loading images with sensitive headers in production environments.

Long-Term Security Practices

Regularly review and update dependencies to address known vulnerabilities.
Implement secure coding practices to prevent information exposure vulnerabilities.

Patching and Updates

Monitor for security advisories and apply patches promptly to address vulnerabilities like CVE-2020-7696.