Authorization bypass in SPIP

1) Improper Authorization

EUVDB-ID: #VU21414

Risk: Medium

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11071

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to application allows injection of HTML characters based on presence of "var_memotri" HTTP parameter in request. A remote authenticated visitor can bypass implemented security restrictions by adding "var_memotri" parameter to HTTP request and inject and execute arbitrary HTML and script code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SPIP: 3.1.0 - 3.2.3

External links

http://blog.spip.net/Mise-a-jour-CRITIQUE-de-securite-Sortie-de-SPIP-3-1-10-et-SPIP-3-2-4.html
http://github.com/spip/SPIP/commit/3ef87c525bc0768c926646f999a54222b37b5d36
http://github.com/spip/SPIP/commit/824d17f424bf77d17af89c18c3dc807a3199567e
http://github.com/spip/SPIP/compare/1e3872c...9861a47

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.