CVE-2018-17848 : Security Advisory and Response

A mishandling issue in the html package (x/net/html) in Go up until 2018-09-25 can lead to a runtime error due to an index out of range error.

Understanding CVE-2018-17848

This CVE involves a specific mishandling issue in the html package in Go, impacting versions up to 2018-09-25.

What is CVE-2018-17848?

The vulnerability arises from a mishandling problem in the html package in Go, specifically triggered by a particular sequence, leading to a runtime error.

The Impact of CVE-2018-17848

The issue can cause a "panic: runtime error" due to an index out of range error, affecting the (*insertionModeStack).pop function in node.go during an html.Parse call.

Technical Details of CVE-2018-17848

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability stems from a mishandling issue in the html package in Go, causing a runtime error due to an index out of range error.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

The issue occurs when processing the sequence <math><template><mn><b></template>, triggering a panic: runtime error due to an index out of range error.

Mitigation and Prevention

Protective measures to address CVE-2018-17848.

Immediate Steps to Take

Update to the latest version of Go to mitigate the vulnerability.
Monitor official sources for patches or security advisories.

Long-Term Security Practices

Regularly update software and dependencies to prevent vulnerabilities.
Conduct security audits and code reviews to identify and address potential issues.

Patching and Updates

Apply patches or updates provided by the Go language maintainers to fix the vulnerability.