Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2023-43659
CVE-2023-43659:
NixOS vulnerability analysis and mitigation
Overview
Discourse, an open source platform for community discussion, was found to contain a Cross-site Scripting (XSS) vulnerability via the digest email preview UI. The vulnerability (CVE-2023-43659) was disclosed on October 16, 2023, and affects versions prior to 3.1.1 stable and 3.2.0.beta1. This security issue only impacts sites that have Content Security Policy (CSP) disabled (GitHub Advisory).
Technical details
The vulnerability stems from improper escaping of user input in the digest email preview user interface, which could allow for Cross-site Scripting attacks. The issue has been assigned a CVSS v3.1 base score of 5.4 MEDIUM by NVD and 8.0 HIGH by GitHub, with the following vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H. The vulnerability requires low attack complexity and low privileges, but does need user interaction to be exploited (NVD).
Impact
If exploited, this vulnerability could lead to unauthorized access to sensitive information and potential manipulation of web content through cross-site scripting attacks. The high confidentiality, integrity, and availability ratings in the CVSS score indicate that successful exploitation could result in significant impact to the affected system (GitHub Advisory).
Mitigation and workarounds
The vulnerability has been patched in Discourse version 3.1.1 stable release and version 3.2.0.beta1. Users are advised to upgrade to these versions or later. For users unable to upgrade immediately, enabling Content Security Policy (CSP) on the forum serves as an effective workaround (GitHub Advisory).
Additional resources
Source: This report was generated using AI
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