Memory Corruption Vulnerability in Node.js
Summary
CVE-2020-8174: napi_get_value_string_*() allows various kinds of memory corruption in node < 10.21.0, 12.18.0, and < 14.4.0. Affects nodejs across 2 version ranges.
< 12.20.1-r0
< 23adb548a57db0c56e359265108e7fe71d8b4f73
Fixed in 12.20.1-r0. How to fix ↓
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Background
Node.js is a popular JavaScript runtime built on Chrome's V8 JavaScript engine. It allows developers to build scalable and high-performance applications. However, a memory corruption vulnerability has been discovered in versions prior to 10.21.0, 12.18.0, and 14.4.0. This vulnerability, identified as CVE-2020-8174, affects the napi_get_value_string_*() function in Node.js.
Vulnerability Detail
The napi_get_value_string_*() function in Node.js is susceptible to various types of memory corruption. This vulnerability can be exploited by an attacker to execute arbitrary code or cause a denial of service. The issue arises due to improper handling of certain input values, leading to memory corruption. Attackers can potentially exploit this vulnerability to gain unauthorized access, escalate privileges, or disrupt the normal functioning of the affected Node.js application.
How To Fix
Minimum fixed version
12.20.1-r0
This is the first release that contains the fix.
sudo apk add --upgrade nodejsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, developers can consider implementing input validation and sanitization techniques to prevent malicious input from triggering the memory corruption vulnerability. By carefully validating and sanitizing user input, the risk of exploitation can be reduced. Here is an example of input validation in Node.js:
const userInput = req.body.userInput;
if (typeof userInput === 'string') {
// Proceed with further processing
} else {
// Handle invalid input
}
Conclusion
The memory corruption vulnerability in Node.js can have serious security implications. It is crucial to update to a fixed version of Node.js, preferably version 12.20.1 or later, to mitigate the risk of exploitation. Implementing input validation and sanitization techniques can provide temporary protection until the update is applied. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can allow attackers to execute arbitrary code or cause a denial of service. It may lead to unauthorized access, privilege escalation, or disruption of the affected Node.js application.
Versions prior to 10.21.0, 12.18.0, and 14.4.0 are affected by this vulnerability.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to update Node.js to a fixed version to prevent potential exploitation.
Yes, a patch is available in Node.js version 12.20.1 and later. It is recommended to update to the latest version to address this vulnerability.
If updating to the latest version is not feasible, consider implementing input validation and sanitization techniques to mitigate the risk of exploitation. Additionally, monitor for any security updates or patches provided by the Node.js community.
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