CVE-2020-15216 Explained : Impact and Mitigation

In goxmldsig (XML Digital Signatures implemented in pure Go) before version 1.1.0, an attacker can bypass signature validation, allowing the passing of altered files as signed ones. Users should upgrade to at least revision f6188febf0c29d7ffe26a0436212b19cb9615e64 or version 1.1.0.

Understanding CVE-2020-15216

What is CVE-2020-15216?

CVE-2020-15216 is a vulnerability in goxmldsig that enables attackers to bypass signature validation, potentially leading to the acceptance of modified files as valid.

The Impact of CVE-2020-15216

The vulnerability poses a medium severity risk with a CVSS base score of 5.3. It requires user interaction and has a high impact on integrity.

Technical Details of CVE-2020-15216

Vulnerability Description

In goxmldsig before version 1.1.0, a crafted XML file can bypass signature validation.

Affected Systems and Versions

Product: goxmldsig
Vendor: russellhaering
Versions Affected: < 1.1.0

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Privileges Required: None
User Interaction: Required

Mitigation and Prevention

Immediate Steps to Take

Upgrade goxmldsig to at least revision f6188febf0c29d7ffe26a0436212b19cb9615e64 or version 1.1.0

Long-Term Security Practices

Regularly update software to the latest versions
Implement secure coding practices
Validate all inputs and outputs

Patching and Updates

Apply patches provided by the vendor