CVE-2018-17847 : Vulnerability Insights and Analysis

A vulnerability in the Go programming language's html package (x/net/html) up to 2018-09-25 can lead to a runtime error due to an index out of range, triggered during an html.Parse operation.

Understanding CVE-2018-17847

This CVE entry describes a specific vulnerability in the Go programming language's html package.

What is CVE-2018-17847?

The vulnerability arises when processing a particular sequence in the html package, resulting in a runtime error due to an index out of range.

The Impact of CVE-2018-17847

The vulnerability can cause a panic with a runtime error, affecting the stability and security of systems utilizing the Go programming language.

Technical Details of CVE-2018-17847

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue occurs in the (*nodeStack).pop function in node.go during an html.Parse operation, leading to a panic due to an index out of range.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Up to 2018-09-25

Exploitation Mechanism

The vulnerability is triggered by processing the <svg><template><desc><t><svg> sequence, causing the index out of range error.

Mitigation and Prevention

Protecting systems from CVE-2018-17847 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Go programming language to a version that includes a patch for this vulnerability.
Monitor for any unusual behavior that might indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and libraries to mitigate potential vulnerabilities.
Conduct security audits and code reviews to identify and address any similar issues.

Patching and Updates

Ensure that the Go programming language is kept up to date with the latest security patches to prevent exploitation of this vulnerability.