Cross-site scripting in Kirby



Published: 2021-05-04
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-29460
CWE ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Kirby
Web applications / Modules and components for CMS

Vendor Ian Stewart

Security Advisory

This security advisory describes one low risk vulnerability.

1) Cross-site scripting

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-29460

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kirby: 3.5.3.1

CPE External links

https://github.com/getkirby/kirby/security/advisories/GHSA-qgp4-5qx6-548g
https://github.com/getkirby/kirby/releases/tag/3.5.4
http://packetstormsecurity.com/files/162359/Kirby-CMS-3.5.3.1-Cross-Site-Scripting.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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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