Cross-Site Scripting Vulnerability in Paste Package: CVE-2010-2477
Summary
DEBIAN-CVE-2010-2477: Multiple cross-site scripting (XSS) vulnerabilities in the paste.httpexceptions implementation in Paste before 1.7.4 allow remote attackers to inject arbitrary web script or HTML via vectors involving a 404 status code,... Affects paste versions < 1.7.4-1. Fixed in 1.7.4-1. How to fix ↓
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Background
The Paste package is a Python web framework that provides various utilities for web application development. It includes components for URL parsing, exception handling, and more. However, prior to version 1.7.4, it was found to be vulnerable to multiple cross-site scripting (XSS) attacks, which could allow attackers to inject malicious scripts into web applications using Paste.
Vulnerability Detail
The vulnerability, identified as CVE-2010-2477, arises from multiple cross-site scripting (XSS) flaws in the paste.httpexceptions implementation. These flaws allow remote attackers to inject arbitrary web scripts or HTML into responses, particularly when a 404 status code is returned. The affected components include paste.urlparser.StaticURLParser, paste.urlparser.PkgResourcesParser, paste.urlmap.URLMap, and HTTPNotFound. If exploited, this vulnerability could lead to unauthorized actions being performed on behalf of users or the exposure of sensitive information.
How To Fix
Minimum fixed version
1.7.4-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade pasteTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider implementing input validation and sanitization on user inputs to mitigate the risk of XSS attacks. Additionally, you can configure your web application to handle 404 errors more securely, avoiding the exposure of sensitive information.
Conclusion
The CVE-2010-2477 vulnerability in the Paste package poses a significant risk due to its potential for cross-site scripting attacks. It is crucial for users of the affected versions to update to version 1.7.4 or later to mitigate this risk. Additionally, employing best practices for input handling can further enhance security.
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FAQ
CVE-2010-2477 is a security vulnerability in the Paste package that allows for cross-site scripting (XSS) attacks.
You can check if your application is affected by using the Vulert playground at Vulert Scanner, which analyzes your manifest file for vulnerabilities.
Exploiting this vulnerability could allow attackers to execute malicious scripts in the context of a user's session, potentially leading to data theft or unauthorized actions.
Yes, the vulnerability is fixed in Paste version 1.7.4 and later. Updating to this version will resolve the issue.
If you cannot update right away, implement input validation and sanitization, and review your error handling to minimize exposure to XSS attacks.
References
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