Improper input validation in Backdrop CMS Form API

1) Input validation error

EUVDB-ID: #VU60672

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-25271

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the web application.

The vulnerability exists due to insufficient validation of user-supplied input within the form API. A remote attacker can send specially crafted input to the Drupal core's form API and inject or overwrite data.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Backdrop CMS: 1.19.0 - 1.21.1

CPE2.3

• cpe:2.3:a:backdropcms:backdrop:1.19.5:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.21.1:*:*:*:*:*:*:*

External links

https://backdropcms.org/security/backdrop-sa-core-2022-001

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.