Insecure deserialization in Tablefield module for Backdrop CMS

1) Deserialization of Untrusted Data

EUVDB-ID: #VU18636

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data during CSV export. A remote authenticated user with permissions to 'export tablefield' and ability to inject a malicious payload into an entity's field execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TableField: 1.x-2.5.0 - 1.x-2.5.3

CPE2.3

• cpe:2.3:a:backdropcms:tablefield:1.x-2.5.0:*:*:*:*:backdrop:*:*
• cpe:2.3:a:backdropcms:tablefield:1.x-2.5.1:*:*:*:*:backdrop:*:*
• cpe:2.3:a:backdropcms:tablefield:1.x-2.5.2:*:*:*:*:backdrop:*:*

External links

https://backdropcms.org/security/backdrop-sa-contrib-2019-007

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.