Critical Vulnerability in node-semver: Denial of Service Risk
Summary
USN-4776-1: node-semver vulnerability. Affects node-semver versions < 2.1.0-2ubuntu0.0.1~esm1. Fixed in 2.1.0-2ubuntu0.0.1~esm1. How to fix ↓
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Background
node-semver is a popular JavaScript library used for parsing and comparing semantic versioning strings. It is widely utilized in various Node.js applications to manage package versions effectively. However, a vulnerability has been identified that affects its ability to handle certain inputs, potentially leading to denial of service scenarios.
Vulnerability Detail
The vulnerability, identified as CVE-2015-8855, arises from improper handling of specific inputs by the semver library. This flaw can be exploited by remote attackers to cause a denial of service, which may disrupt the functionality of applications relying on this library. The issue stems from the library's failure to validate inputs adequately, allowing attackers to craft malicious requests that can overwhelm the system.
How To Fix
Minimum fixed version
2.1.0-2ubuntu0.0.1~esm1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade node-semverTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider implementing input validation in your application to filter out potentially harmful inputs before they reach the semver library. This can help mitigate the risk of denial of service attacks until the package is updated.
Conclusion
The node-semver vulnerability (CVE-2015-8855) poses a significant risk of denial of service due to improper input handling. It is crucial for users of this library to update to the patched versions as soon as possible to ensure the security and stability of their applications. Additionally, implementing input validation can serve as a temporary measure until the update is applied.
See every vulnerability recorded for node-semver →
FAQ
CVE-2015-8855 is a vulnerability in the node-semver library that allows remote attackers to cause a denial of service by sending specially crafted inputs.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
Exploitation of this vulnerability can lead to denial of service, causing applications that depend on node-semver to become unresponsive or crash.
Yes, updating to the patched versions of node-semver is the recommended permanent fix for this vulnerability.
If you cannot update the package, implement input validation in your application to mitigate the risk of denial of service attacks.
References
Related vulnerabilities
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