CVE-2020-18771 Explained : Impact and Mitigation

Exiv2 0.27.99.0 has a global buffer over-read vulnerability that can lead to an information leak.

Understanding CVE-2020-18771

Exiv2 version 0.27.99.0 is susceptible to a global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp, potentially resulting in an information disclosure.

What is CVE-2020-18771?

This CVE refers to a vulnerability in Exiv2 0.27.99.0 that allows attackers to read beyond the allocated memory buffer, potentially exposing sensitive information.

The Impact of CVE-2020-18771

The vulnerability can be exploited to leak sensitive data stored in memory, posing a risk of unauthorized access to potentially confidential information.

Technical Details of CVE-2020-18771

Exiv2 0.27.99.0 is affected by a buffer over-read vulnerability that can be leveraged for information disclosure.

Vulnerability Description

The issue lies in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp, allowing unauthorized access to memory contents.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Version: n/a (affected)

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a specific request to trigger the buffer over-read and retrieve sensitive data.

Mitigation and Prevention

To address CVE-2020-18771, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor for any unusual activities that might indicate exploitation of the vulnerability.

Long-Term Security Practices

Conduct regular security assessments and audits to identify and mitigate vulnerabilities.
Implement the principle of least privilege to restrict access to sensitive data.
Educate users and employees on security best practices to prevent potential exploits.

Patching and Updates

Ensure that the Exiv2 software is updated to a patched version that addresses the buffer over-read vulnerability.