SB2023010509 - Multiple vulnerabilities in Discourse

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Main Vulnerability Database SB2023010509

SB2023010509 - Multiple vulnerabilities in Discourse

Published: January 5, 2023

Security Bulletin ID SB2023010509
Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2022-23548)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.


2) Input validation error (CVE-ID: CVE-2022-23549)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the post max_length. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.


3) Cross-site scripting (CVE-ID: CVE-2023-22455)

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 in the tag descriptions. A remote user 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.


4) Information disclosure (CVE-ID: CVE-2023-22453)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application within the /u/username.json endpoint. A remote attacker can gain unauthorized access to sensitive information on the system.


5) Cross-site scripting (CVE-ID: CVE-2023-22454)

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 the pending post titles descriptions. A remote user 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.


6) Information disclosure (CVE-ID: CVE-2022-46168)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in CC email header. A remote user can gain unauthorized access to sensitive information on the system.


Remediation

Install update from vendor's website.

References