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Date: Wed, 8 Nov 2023 17:51:24 +0200
From: Harry Maraziaris <cmaraziaris@...sus-labs.com>
To: oss-security@...ts.openwall.com
Subject: CVE-2023-46857 - Weak SVG asset filtering mechanism in Squidex leads
to XSS
Hello all,
Squidex, a "headless" open source CMS framework was found to have a
stored XSS vulnerability in the "Upload Assets" functionality due to
insufficient SVG element filtering. The vulnerability affects all
versions of the framework prior to 7.9.0.
CVE-2023-46857 was assigned to this vulnerability by MITRE.
The vulnerability affects authenticated users of the Squidex CMS Web
application and allows for malicious JavaScript to be executed within
victim user browsers. Moreover, the vulnerability enables an attacker to
collect the CMS authentication token from browser local storage and it
is therefore possible for the attacker to gain unauthorized access to a
victim user's session.
More information about this issue is available here:
https://census-labs.com/news/2023/11/08/weak-svg-asset-filtering-mechanism-in-squidex-cms/
Best regards,
Charalampos Maraziaris
--
Charalampos Maraziaris
IT Security Engineer
CENSUS S.A. - https://census-labs.com
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