SB2024100716 - Multiple vulnerabilities in Discourse
Published: October 7, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Cross-site scripting (CVE-ID: CVE-2024-47772)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data within chat excerpts when CSP disabled. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
2) Improper access control (CVE-ID: CVE-2024-45051)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper email address validation within encoded email addresses. A remote attacker can use specially crafted email address bypass domain-based restrictions and gain access to private sites, categories and/or groups.
3) Information disclosure (CVE-ID: CVE-2024-45297)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote attacker can see topics with a hidden tag if they know the label/name of that tag.
Remediation
Install update from vendor's website.