Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-43827 | First vendor Publication | 2021-12-14 |
| Vendor | Cve | Last vendor Modification | 2021-12-29 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L | |||
|---|---|---|---|
| Overall CVSS Score | 4.3 | ||
| Base Score | 4.3 | Environmental Score | 4.3 |
| impact SubScore | 1.4 | Temporal Score | 4.3 |
| Exploitabality Sub Score | 2.8 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | Low |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:S/C:N/I:N/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 4 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Low |
| Cvss Expoit Score | 8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| discourse-footnote is a library providing footnotes for posts in Discourse. ### Impact When posting an inline footnote wrapped in `` tags (e.g. `^[footnote]`, the resulting rendered HTML would include a nested ``, which is stripped by Nokogiri because it is not valid. This then caused a javascript error on topic pages because we were looking for an `` element inside the footnote reference span and getting its ID, and because it did not exist we got a null reference error in javascript. Users are advised to update to version 0.2. As a workaround editing offending posts from the rails console or the database console for self-hosters, or disabling the plugin in the admin panel can mitigate this issue. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43827 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-755 | Improper Handling of Exceptional Conditions |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 1 |
Sources (Detail)
| Source | Url |
|---|---|
| CONFIRM | https://github.com/discourse/discourse-footnote/security/advisories/GHSA-58vr... |
| MISC | https://github.com/discourse/discourse-footnote/commit/796617e013127701120754... |
Alert History
| Date | Informations |
|---|---|
| 2021-12-30 00:23:00 |
|
| 2021-12-15 12:49:48 |
|
| 2021-12-15 05:22:52 |
|
