Advisory Weakness Curation

Pimcore Admin Classic Bundle Cross-site Scripting (XSS) in PDF previews ### Impact This vulnerability has the potential to steal a user's cookie and gain unauthorized access to that user's account through the stolen cookie or redirect users to other malicious sites. Proof of Concept Step 1. Go to /admin and login. Step 2. In Documents, go to home -> click on Sample Content -> click Document folder Step 3. Upload file PDF content XSS payload ### Patches Apply patches https://github.com/pimcore/pimcore/commit/757375677dc83a44c6c22f26d97452cc5cda5d7c.patch https://github.com/pimcore/admin-ui-classic-bundle/commit/19fda2e86557c2ed4978316104de5ccdaa66d8b9.patch ### Workarounds Update to version 1.2.0 or apply patches manually https://github.com/pimcore/pimcore/commit/757375677dc83a44c6c22f26d97452cc5cda5d7c.patch https://github.com/pimcore/admin-ui-classic-bundle/commit/19fda2e86557c2ed4978316104de5ccdaa66d8b9.patch

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) The Pimcore Admin Classic Bundle provides a backend UI for Pimcore. Prior to version 1.2.0, a cross-site scripting vulnerability has the potential to steal a user's cookie and gain unauthorized access to that user's account through the stolen cookie or redirect users to other malicious sites. Users should upgrade to version 1.2.0 to receive a patch or, as a workaround, apply the patch manually.