Code injection in SPIP

1) Code Injection

EUVDB-ID: #VU48694

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-28984

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation in "prive/formulaires/configurer_preferences.php" when processing data passed via couleur, display, display_navigation, display_outils, imessage, and spip_ecran parameters. A remote user can send a specially crafted request and 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

SPIP: 3.2 - 3.2.7

External links

http://git.spip.net/spip/spip/commit/ae4267eba1022dabc12831ddb021c5d6e09040f8
http://git.spip.net/spip/spip/compare/v3.2.7...v3.2.8
http://www.debian.org/security/2020/dsa-4798

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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