CVE-2017-16031: Insecure randomness in socket.io
Summary
CVE-2017-16031: Insecure randomness in socket.io. Affects socket.io versions < 0.9.7. Fixed in 0.9.7. How to fix ↓
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Background
Socket.io is a popular JavaScript library that enables real-time, bidirectional communication between web clients and servers. It provides a seamless and reliable connection for applications that require instant data updates. However, versions of socket.io prior to v0.9.7 suffer from an insecure randomness vulnerability. The library relies on the Math.random() function to generate socket IDs, making them predictable. This flaw allows an attacker with sufficient knowledge of prior IDs to guess the socket ID and gain unauthorized access to socket.io servers.
Vulnerability Detail
The vulnerability in socket.io arises from the predictable nature of the socket IDs generated using Math.random(). As a result, an attacker can exploit this weakness by guessing the socket ID and bypassing the authorization mechanism. This can lead to unauthorized access to socket.io servers and potential misuse of sensitive data or disruption of services. The vulnerability has a CVSS score of 7.5, indicating a high severity level.
How To Fix
Minimum fixed version
0.9.7
This is the first release that contains the fix.
npm install socket.io@0.9.7Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround provided for this vulnerability. It is crucial to update to the patched version of socket.io to mitigate the risk effectively.
Conclusion
In summary, the vulnerability in socket.io arises from the predictable nature of socket IDs generated using Math.random(). This flaw can be exploited by attackers to gain unauthorized access to socket.io servers. To mitigate this risk, it is crucial to update to socket.io version 0.9.7 or later. For further assistance and support in addressing this vulnerability, please contact DevNack.com.
See every vulnerability recorded for socket.io →
FAQ
Socket.io is a JavaScript library that enables real-time, bidirectional communication between web clients and servers. It simplifies the development of applications that require instant data updates and interactive features.
The vulnerability allows an attacker to guess socket IDs, leading to unauthorized access to socket.io servers. This can result in the compromise of sensitive data or disruption of services.
The CVSS score for this vulnerability is 7.5, indicating a high severity level.
To fix the vulnerability, update socket.io to version 0.9.7 or later. This update includes a patch that improves the randomness of socket IDs, making them more secure.
No, there is no specific workaround available. It is essential to update to the patched version of socket.io to mitigate the risk effectively.
References
Related vulnerabilities
Recent vulnerabilities recorded for socket.io.
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