Multiple vulnerabilities in Discourse



Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2023-31142
CVE-2023-32301
CVE-2023-32061
CVE-2023-34250
CWE-ID CWE-732
CWE-20
CWE-863
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Discourse
Web applications / Forum & blogging software

Vendor Civilized Discourse Construction Kit, Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Incorrect permission assignment for critical resource

EUVDB-ID: #VU77503

Risk: Low

CVSSv4.0: 0.2 [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]

CVE-ID: CVE-2023-31142

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Discourse: 3.0 beta - 3.1.0 beta4

CPE2.3 External links

https://github.com/discourse/discourse/security/advisories/GHSA-286w-97m2-78x2


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU77506

Risk: Medium

CVSSv4.0: 2.7 [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]

CVE-ID: CVE-2023-32301

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Discourse: 3.0 beta - 3.1.0 beta4

CPE2.3 External links

https://github.com/discourse/discourse/security/advisories/GHSA-p2jx-m2j5-hqh4


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Incorrect authorization

EUVDB-ID: #VU77505

Risk: Medium

CVSSv4.0: 2.7 [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]

CVE-ID: CVE-2023-32061

CWE-ID: CWE-863 - Incorrect Authorization

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Discourse: 3.0 beta - 3.1.0 beta4

CPE2.3 External links

https://github.com/discourse/discourse/security/advisories/GHSA-prx4-49m8-874g


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Information disclosure

EUVDB-ID: #VU77504

Risk: Low

CVSSv4.0: 1.7 [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]

CVE-ID: CVE-2023-34250

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Discourse: 3.0 beta - 3.1.0 beta4

CPE2.3 External links

https://github.com/discourse/discourse/security/advisories/GHSA-q8m5-wmjr-3ppg


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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