SB2022041451 - Multiple vulnerabilities in Discourse

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Main Vulnerability Database SB2022041451

SB2022041451 - Multiple vulnerabilities in Discourse

Published: April 14, 2022 Updated: July 1, 2026

Security Bulletin ID SB2022041451
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2018-25032)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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 when compressing data. A remote attacker can pass specially crafted input to the application, trigger memory corruption and perform a denial of service (DoS) attack.


2) Improper access control (CVE-ID: CVE-2022-24804)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper access control in category permissions handling when viewing a category. A remote attacker can view a category configured with a restricted-visibility group to disclose sensitive information.

The name of the restricted-visibility group may be exposed to any user able to see the category.


3) Input validation error (CVE-ID: CVE-2022-24824)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a partial denial of service.

The vulnerability exists due to improper input validation in the request handling and caching logic when handling a maliciously formed request. A remote attacker can send a specially crafted request to cause a partial denial of service.

Anonymous users may be served the crawler view of the site instead of the normal HTML page.


4) Improper access control (CVE-ID: CVE-2022-24850)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper access control in category group permissions settings when handling access to a category. A remote attacker can view category group read/write permission information to disclose sensitive information.


Remediation

Install update from vendor's website.

References