Denial of service in Discourse



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-43789
CWE-ID CWE-20
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 one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU98060

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-43789

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper restrictions on replies to posts. A remote attacker can create a post with many replies, attempt to fetch them all at once and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Discourse: before 3.4.0 beta1

CPE2.3 External links

https://github.com/discourse/discourse/security/advisories/GHSA-62cq-cpmc-hvqq


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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