SB2023061911 - Multiple vulnerabilities in Discourse

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Main Vulnerability Database SB2023061911

SB2023061911 - Multiple vulnerabilities in Discourse

Published: June 19, 2023

Security Bulletin ID SB2023061911
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

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

Description

This security bulletin contains information about 4 vulnerabilities.


1) Incorrect permission assignment for critical resource (CVE-ID: CVE-2023-31142)

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

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


The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to incorrect permission assignment for critical resource. A remote administrator can set back to default general category permissions.


2) Input validation error (CVE-ID: CVE-2023-32301)

CWE-ID: CWE-20 - Improper input validation

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


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to canonical url is not used for topic embeddings. A remote attacker can create multiple duplicate topics if topic embedding is enabled.


3) Incorrect authorization (CVE-ID: CVE-2023-32061)

CWE-ID: CWE-863 - Incorrect Authorization

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


The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to lack of restrictions on the iFrame tag. A remote attacker can hide subsequent comments from other users.


4) Information disclosure (CVE-ID: CVE-2023-34250)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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


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 use the new topics dismissal endpoint to reveal the number of topics recently created.


Remediation

Install update from vendor's website.

References