CVE-2021-23673: Cross-site Scripting in pekeupload
Summary
CVE-2021-23673: Cross-site Scripting in pekeupload. Affects pekeupload versions < 2.1.1. No fix is published. How to fix ↓
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Background
pekeupload is an npm package that provides file upload functionality. It is used to allow users to upload files to a web application. The package has versions ranging from 0 to 2.1.1. The vulnerability in pekeupload allows an attacker to execute arbitrary JavaScript code by inducing a user to upload a file with a malicious name. When the file is processed, the JavaScript code is executed, potentially leading to cross-site scripting (XSS) attacks.
Vulnerability Detail
The vulnerability in pekeupload arises from a lack of proper input validation and sanitization when processing file names. If an attacker can trick a user into uploading a file with a name that contains JavaScript code, that code will be executed in the context of the user's browser. This can allow the attacker to perform various malicious actions, such as stealing sensitive information, manipulating the user interface, or performing actions on behalf of the user. The vulnerability has a CVSS score of 6.1, indicating a moderate severity.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating to a patched version of pekeupload is not immediately possible, a temporary workaround can be implemented. One possible workaround is to implement additional server-side validation of file names to ensure that they do not contain any potentially malicious code. This can be done by checking the file name against a whitelist of allowed characters and rejecting any files with suspicious names. Additionally, implementing client-side validation to prevent users from uploading files with potentially malicious names can provide an extra layer of protection.
Conclusion
The vulnerability in pekeupload allows an attacker to execute arbitrary JavaScript code by tricking a user into uploading a file with a malicious name. This can lead to cross-site scripting (XSS) attacks and potential unauthorized access to sensitive information. It is important to update to a patched version of pekeupload and implement proper input validation and sanitization to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
pekeupload is an npm package that provides file upload functionality for web applications.
All versions of pekeupload up to and including 2.1.1 are affected by this vulnerability.
An attacker can exploit this vulnerability by tricking a user into uploading a file with a name that contains JavaScript code. When the file is processed, the JavaScript code will be executed in the user's browser.
The potential consequences of this vulnerability include cross-site scripting (XSS) attacks, where an attacker can steal sensitive information, manipulate the user interface, or perform actions on behalf of the user.
To protect your application from this vulnerability, it is recommended to update to a version of pekeupload that includes a patch for the issue. Implementing additional server-side and client-side validation of file names can also provide extra protection.
