CVE - CVE-2023-37269

CVE-ID
CVE-2023-37269	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Users with the `backend.manage_branding` permission can upload SVGs as the application logo. Prior to version 1.2.3, SVG uploads were not sanitized, which could have allowed a stored cross-site scripting (XSS) attack. To exploit the vulnerability, an attacker would already need to have developer or super user level permissions in Winter CMS. This means they would already have extensive access and control within the system. Additionally, to execute the XSS, the attacker would need to convince the victim to directly visit the URL of the maliciously uploaded SVG, and the application would have to be using local storage where uploaded files are served under the same domain as the application itself instead of a CDN. This is because all SVGs in Winter CMS are rendered through an `img` tag, which prevents any payloads from being executed directly. These two factors significantly limit the potential harm of this vulnerability. This issue has been patched in v1.2.3 through the inclusion of full support for SVG uploads and automatic sanitization of uploaded SVG files. As a workaround, one may apply the patches manually.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:http://packetstormsecurity.com/files/173520/WinterCMS-1.2.2-Cross-Site-Scripting.html MISC:https://github.com/wintercms/storm/commit/186d85d8fea2cae43afc807d39f68553c24e56be URL:https://github.com/wintercms/storm/commit/186d85d8fea2cae43afc807d39f68553c24e56be MISC:https://github.com/wintercms/winter/commit/fa50b4c7489b67ea80072f8ac9fe5294fce1df1c URL:https://github.com/wintercms/winter/commit/fa50b4c7489b67ea80072f8ac9fe5294fce1df1c MISC:https://github.com/wintercms/winter/releases/tag/v1.2.3 URL:https://github.com/wintercms/winter/releases/tag/v1.2.3 MISC:https://github.com/wintercms/winter/security/advisories/GHSA-wjw2-4j7j-6gc3 URL:https://github.com/wintercms/winter/security/advisories/GHSA-wjw2-4j7j-6gc3
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20230629	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20230629)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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