#VU19979 Cross-site scripting in Backdrop CMS


Published: 2019-08-08

Vulnerability identifier: #VU19979

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Backdrop CMS
Web applications / CMS

Vendor: Backdrop CMS

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 when displaying labels in the admin area. 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

Backdrop CMS: 1.13.0 - 1.13.2, 1.12.0 - 1.12.7


External links
http://backdropcms.org/security/backdrop-sa-core-2019-011


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.


Latest bulletins with this vulnerability