Vulnerability identifier: #VU64458

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-44122

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SPIP
Web applications / CMS

Vendor: spip.net

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin in ecrire/public/aiguiller.php, ecrire/public/balises.php, and ecrire/balise/formulaire_.php scripts. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

It is also possible to combine XSS vulnerabilities in SPIP 4.0.0 to exploit it.

Mitigation
Install update from vendor's website.

Vulnerable software versions

SPIP: 4.0.0

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External links
http://git.spip.net/spip/spip/commit/1b8e4f404c2441c15ca6540b9a6d8e50cff219db

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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.