4.3
MEDIUM
CVE-2024-21658
Discourse Calendar Insufficient Input Validation Denial of Service (DoS)
Description

discourse-calendar is a discourse plugin which adds the ability to create a dynamic calendar in the first post of a topic. The limit on region value length is too generous. This allows a malicious actor to cause a Discourse instance to use excessive bandwidth and disk space. This issue has been patched in main the main branch. There are no workarounds for this vulnerability. Please upgrade as soon as possible.

INFO

Published Date :

Aug. 30, 2024, 6:15 p.m.

Last Modified :

Sept. 5, 2024, 2:39 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2024-21658 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Discourse discourse_calendar
2 Discourse calendar
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-21658.

URL Resource
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-65f2-9ghp-x8h8 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-21658 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-21658 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Reanalysis by [email protected]

    Sep. 05, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:discourse:discourse_calendar:-:*:*:*:*:discourse:*:* OR *cpe:2.3:a:discourse:discourse_calendar:*:*:*:*:*:discourse:*:* versions up to (excluding) 2024-08-28
  • Initial Analysis by [email protected]

    Sep. 05, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
    Changed Reference Type https://github.com/discourse/discourse-calendar/security/advisories/GHSA-65f2-9ghp-x8h8 No Types Assigned https://github.com/discourse/discourse-calendar/security/advisories/GHSA-65f2-9ghp-x8h8 Vendor Advisory
    Added CWE NIST CWE-770
    Added CPE Configuration OR *cpe:2.3:a:discourse:discourse_calendar:-:*:*:*:*:discourse:*:*
  • CVE Received by [email protected]

    Aug. 30, 2024

    Action Type Old Value New Value
    Added Description discourse-calendar is a discourse plugin which adds the ability to create a dynamic calendar in the first post of a topic. The limit on region value length is too generous. This allows a malicious actor to cause a Discourse instance to use excessive bandwidth and disk space. This issue has been patched in main the main branch. There are no workarounds for this vulnerability. Please upgrade as soon as possible.
    Added Reference GitHub, Inc. https://github.com/discourse/discourse-calendar/security/advisories/GHSA-65f2-9ghp-x8h8 [No types assigned]
    Added CWE GitHub, Inc. CWE-400
    Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-21658 is associated with the following CWEs:

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability