Improper access control in Backdrop CMS

1) Improper access control

EUVDB-ID: #VU75351

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to files.

The vulnerability exists due to improper access restrictions in the file download facility. A remote attacker can bypass implemented security restrictions and gain to private files.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Backdrop CMS: 1.20.0 - 1.24.1

CPE2.3

• cpe:2.3:a:backdropcms:backdrop:1.20.0:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.1:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.2:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.3:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.4:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.5:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.6:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.20.7:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.21.0:*:*:*:*:*:*:*
• cpe:2.3:a:backdropcms:backdrop:1.21.1:*:*:*:*:*:*:*

External links

https://backdropcms.org/security/backdrop-sa-core-2023-005

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.