CVE-2022-30635 : What You Need to Know

This article provides insights into CVE-2022-30635, a vulnerability in the Go programming language's encoding/gob package.

Understanding CVE-2022-30635

CVE-2022-30635 relates to stack exhaustion when decoding certain messages in the encoding/gob package.

What is CVE-2022-30635?

The vulnerability in Go before versions 1.17.12 and 1.18.4 allows attackers to trigger a panic due to stack exhaustion by sending deeply nested structures via Decoder.Decode.

The Impact of CVE-2022-30635

The vulnerability presents a risk of denial of service (DoS) attacks by causing a panic due to stack exhaustion.

Technical Details of CVE-2022-30635

The following technical details shed light on the CVE-2022-30635 vulnerability.

Vulnerability Description

The issue involves uncontrolled recursion in Decoder.Decode, leading to a panic from stack exhaustion.

Affected Systems and Versions

Vendor: Go standard library Product: encoding/gob Affected Versions: Go less than 1.17.12 and 1.18.4 URL: Go standard library on pkg.go.dev

Exploitation Mechanism

The vulnerability can be exploited by crafting messages with deeply nested structures that trigger uncontrolled recursion in the decoding process.

Mitigation and Prevention

Understanding measures to mitigate and prevent CVE-2022-30635 is crucial to enhancing system security.

Immediate Steps to Take

Update to Go versions 1.17.12 or 1.18.4 to mitigate the vulnerability.

Long-Term Security Practices

Developers should practice secure coding habits to prevent stack exhaustion vulnerabilities in their code.

Patching and Updates

Regularly update Go language installations to the latest versions to ensure protection against known vulnerabilities.