CVE-2020-28367 : Vulnerability Insights and Analysis

CVE-2020-28367, assigned by Go, involves arbitrary code execution via the go command with cgo in cmd/go.

Understanding CVE-2020-28367

This vulnerability allows for code injection in the go command with cgo before Go 1.14.12 and Go 1.15.5, enabling arbitrary code execution at build time through malicious gcc flags specified via a #cgo directive.

What is CVE-2020-28367?

CWE-94: Improper Control of Generation of Code ('Code Injection')

The Impact of CVE-2020-28367

Allows attackers to execute arbitrary code during the build process
Potential for unauthorized access and control of affected systems

Technical Details of CVE-2020-28367

Vulnerability Description

The vulnerability in the go command with cgo allows for arbitrary code execution during the build process by exploiting malicious gcc flags.

Affected Systems and Versions

Vendor: Go toolchain
Product: cmd/go
Versions Affected: Go 1.14.12 and Go 1.15.5

Exploitation Mechanism

Attackers can inject malicious gcc flags via a #cgo directive to execute arbitrary code during the build process

Mitigation and Prevention

Immediate Steps to Take

Update to Go versions 1.14.12 or 1.15.5 to mitigate the vulnerability
Regularly monitor for security updates and patches from the Go toolchain

Long-Term Security Practices

Implement secure coding practices to prevent code injection vulnerabilities
Conduct regular security audits and code reviews to identify and address potential vulnerabilities

Patching and Updates

Apply patches and updates provided by the Go toolchain to address the vulnerability