Cross-site scripting in October CMS



Published: 2020-07-06
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-4061
CWE ID CWE-79
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Subscribe
October CMS
Web applications / CMS

Vendor OctoberCMS

Security Advisory

This security advisory describes one low risk vulnerability.

1) Cross-site scripting

Risk: Low

CVSSv3: 3.1 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-4061

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

Exploit availability: Yes [Search exploit]

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 copied into Froala richeditor. A remote 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

October CMS: 1.0.319, 1.0.320, 1.0.321, 1.0.322, 1.0.323, 1.0.324, 1.0.325, 1.0.326, 1.0.327, 1.0.328, 1.0.329, 1.0.330, 1.0.331, 1.0.332, 1.0.333, 1.0.334, 1.0.335, 1.0.336, 1.0.337, 1.0.338, 1.0.339, 1.0.340, 1.0.341, 1.0.342, 1.0.343, 1.0.344, 1.0.345, 1.0.346, 1.0.347, 1.0.348, 1.0.349, 1.0.350, 1.0.351, 1.0.352, 1.0.353, 1.0.354, 1.0.355, 1.0.356, 1.0.357, 1.0.358, 1.0.359, 1.0.360, 1.0.361, 1.0.362, 1.0.363, 1.0.364, 1.0.365, 1.0.366, 1.0.367, 1.0.368, 1.0.369, 1.0.370, 1.0.371, 1.0.372, 1.0.373, 1.0.374, 1.0.375, 1.0.376, 1.0.377, 1.0.378, 1.0.379, 1.0.380, 1.0.381, 1.0.382, 1.0.383, 1.0.384, 1.0.385, 1.0.386, 1.0.387, 1.0.388, 1.0.389, 1.0.390, 1.0.391, 1.0.392, 1.0.393, 1.0.394, 1.0.395, 1.0.396, 1.0.397, 1.0.398, 1.0.399, 1.0.400, 1.0.401, 1.0.402, 1.0.403, 1.0.404, 1.0.405, 1.0.406, 1.0.407, 1.0.408, 1.0.409, 1.0.410, 1.0.411, 1.0.412, 1.0.413, 1.0.414, 1.0.415, 1.0.416, 1.0.417, 1.0.418, 1.0.419, 1.0.420, 1.0.421, 1.0.422, 1.0.423, 1.0.424, 1.0.425, 1.0.426, 1.0.427, 1.0.428, 1.0.429, 1.0.430, 1.0.431, 1.0.432, 1.0.433, 1.0.434, 1.0.435, 1.0.436, 1.0.437, 1.0.438, 1.0.439, 1.0.440, 1.0.441, 1.0.442, 1.0.443, 1.0.444, 1.0.445, 1.0.446, 1.0.447, 1.0.448, 1.0.449, 1.0.450, 1.0.451, 1.0.452, 1.0.453, 1.0.454, 1.0.455, 1.0.456, 1.0.457, 1.0.458, 1.0.459, 1.0.460, 1.0.461, 1.0.462, 1.0.463, 1.0.464, 1.0.465, 1.0.466

CPE External links

https://github.com/octobercms/october/commit/b384954a29b89117e1c0d6035b3ede4f46df67c5
https://github.com/octobercms/october/security/advisories/GHSA-3pc2-fm7p-q2vg
https://research.securitum.com/the-curious-case-of-copy-paste/

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. However, proof of concept for this vulnerability is available.



ImmuniWeb® AI Platform for Application Security Testing