CVE-2014-6393: No Charset in Content-Type Header in express
Summary
CVE-2014-6393: No Charset in Content-Type Header in express. Affects express across 2 version ranges.
< 3.11.0
>= 4.0.0, < 4.5.0
Fixed in 3.11.0 or 4.5.0, depending on the release line you run. How to fix ↓
Also tracked for
- node-express · Debian:11
The same CVE-2014-6393 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Express is a popular web application framework for Node.js that simplifies the process of building web applications. It provides a robust set of features and middleware for creating APIs, handling routes, and managing HTTP requests and responses. However, vulnerable versions of express do not specify a charset field in the content-type header while displaying 400 level response messages.
Vulnerability Detail
The lack of enforcing the user's browser to set the correct charset can be exploited by an attacker to perform a cross-site scripting attack using non-standard encodings like UTF-7. This vulnerability allows an attacker to inject malicious scripts into the web application, potentially leading to unauthorized access, data theft, or other malicious activities.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
< 3.11.03.11.0npm install express@3.11.0 -
>= 4.0.0, < 4.5.04.5.0npm install express@4.5.0
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the lack of charset specification in the content-type header of vulnerable versions of express can lead to cross-site scripting attacks. It is crucial to update express to the recommended fixed versions to mitigate this vulnerability. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for express →
FAQ
This vulnerability allows an attacker to perform cross-site scripting attacks, potentially leading to unauthorized access, data theft, or other malicious activities.
Vulnerable versions of express include 0.0.1 to 3.10.x for express 3.x, and 4.0.0 to 4.4.x for express 4.x.
There are known exploits for cross-site scripting vulnerabilities in general, but there is no specific information available regarding exploits targeting this vulnerability in express.
The recommended mitigation is to update express to the fixed versions mentioned above.
Yes, the CVSS score for this vulnerability is 6.1 (Moderate).
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