CVE-2021-32735 Detail
Current Description
Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel’s `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. Kirby 3.5.7 patches the vulnerability. As a partial workaround, site administrators can protect against attacks from visitors without Panel access by validating or sanitizing provided data from the frontend form.
Analysis Description
Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel’s `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. Kirby 3.5.7 patches the vulnerability. As a partial workaround, site administrators can protect against attacks from visitors without Panel access by validating or sanitizing provided data from the frontend form.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) | NIST |
| CWE-80 | Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) | GitHub, Inc. |
Change History
1 change records found show changes
Initial Analysis 7/06/2021 2:21:27 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
OR
*cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:* versions up to (excluding) 3.5.7
|
|
| Added | CVSS V2 |
NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N) |
|
| Added | CVSS V2 Metadata |
Victim must voluntarily interact with attack mechanism |
|
| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
|
| Added | CWE |
NIST CWE-79 |
|
| Changed | Reference Type |
https://github.com/getkirby/kirby/releases/tag/3.5.7 No Types Assigned |
https://github.com/getkirby/kirby/releases/tag/3.5.7 Patch, Release Notes, Third Party Advisory |
| Changed | Reference Type |
https://github.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqm No Types Assigned |
https://github.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqm Patch, Release Notes, Third Party Advisory |
Quick Info
CVE Dictionary Entry:
CVE-2021-32735
NVD Published Date:
07/02/2021
NVD Last Modified:
07/06/2021
Source:
GitHub, Inc.