CVE-2021-25963: Reflected Cross-Site Scripting (XSS) in Shuup
Summary
CVE-2021-25963: In Shuup, versions 1.6.0 through 2.10.8 are vulnerable to reflected Cross-Site Scripting (XSS) that allows execution of arbitrary javascript code on a victim browser. Affects shuup across 2 version ranges.
>= 1.6.0, < 2.11.0
< 75714c37e32796eb7cbb0d977af5bcaa26573588
Fixed in 75714c37e32796eb7cbb0d977af5bcaa26573588. How to fix ↓
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Background
Shuup is an open-source e-commerce platform written in Python. It provides a range of features for building online stores, including product management, order processing, and payment integration. Shuup versions 1.6.0 through 2.10.8 are affected by a reflected Cross-Site Scripting (XSS) vulnerability. This vulnerability allows an attacker to inject and execute arbitrary JavaScript code on a victim's browser. The vulnerability arises from the lack of proper escaping of error page contents.
Vulnerability Detail
The reflected XSS vulnerability in Shuup can be exploited by an attacker to inject malicious JavaScript code into error pages. When a user encounters an error, the error page is displayed without proper sanitization, allowing the execution of arbitrary code in the victim's browser. This can lead to various attacks, such as stealing sensitive information, session hijacking, or performing actions on behalf of the victim. The vulnerability was identified in versions 1.6.0 through 2.10.8 of Shuup.
How To Fix
Minimum fixed version
75714c37e32796eb7cbb0d977af5bcaa26573588
This is the first release that contains the fix.
pip install --upgrade "shuup==75714c37e32796eb7cbb0d977af5bcaa26573588"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, developers can manually escape and sanitize error page contents before displaying them to users. This can be achieved by using appropriate HTML encoding functions or libraries. However, applying the official fix by upgrading to a patched version is strongly recommended.
Conclusion
The reflected Cross-Site Scripting (XSS) vulnerability in Shuup versions 1.6.0 through 2.10.8 allows an attacker to execute arbitrary JavaScript code on a victim's browser. It is crucial to upgrade to Shuup version 2.11.0 or later to mitigate this vulnerability. Developers can also manually escape and sanitize error page contents as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to execute arbitrary JavaScript code on a victim's browser, potentially leading to various attacks such as information theft or session hijacking.
Versions 1.6.0 through 2.10.8 of Shuup are affected by this vulnerability.
You can use Vulert's vulnerability playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply provide your Pipfile.lock, and Vulert will analyze it for vulnerabilities.
A temporary workaround is to manually escape and sanitize error page contents before displaying them. However, upgrading to a patched version is strongly recommended.
You can find more information about this vulnerability in the Shuup advisory database at https://github.com/pypa/advisory-database/blob/main/vulns/shuup/PYSEC-2021-350.yaml
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