CVE-2017-16099 : Exploit Details and Defense Strategies

The no-case component is susceptible to regular expression denial of service, potentially leading to a denial of service scenario.

Understanding CVE-2017-16099

The vulnerability was published on April 26, 2018, by HackerOne.

What is CVE-2017-16099?

The no-case module is vulnerable to regular expression denial of service when malicious untrusted user input is passed into it, causing a denial of service condition.

The Impact of CVE-2017-16099

The vulnerability can interrupt the event loop, leading to a denial of service scenario.

Technical Details of CVE-2017-16099

The following technical details provide insight into the vulnerability.

Vulnerability Description

The no-case component is susceptible to regular expression denial of service, potentially causing a denial of service scenario.

Affected Systems and Versions

Product: no-case node module
Vendor: HackerOne
Versions Affected: <2.3.2

Exploitation Mechanism

Malicious untrusted user input introduced into no-case can block the event loop, resulting in a denial of service condition.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the vulnerability.

Immediate Steps to Take

Update the affected no-case node module to a version above 2.3.2.
Avoid passing untrusted user input directly into the no-case module.

Long-Term Security Practices

Regularly monitor and update dependencies to prevent vulnerabilities.
Implement input validation mechanisms to sanitize user input.

Patching and Updates

Apply patches provided by HackerOne promptly to address the vulnerability and prevent exploitation.