Vulnerability identifier: #VU64455

Vulnerability risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-44118

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SPIP
Web applications / CMS

Vendor: spip.net

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user can trick the victim into browsing a malicious SVG file and script code in user's browser in context of a vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

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/medias/commit/13c293fabd35e2c152379522c29432423936cbba
http://git.spip.net/spip/spip/commit/4ccf90a6912d7fab97e1bd5619770c9236cc7357
http://git.spip.net/spip/spip/commit/1cf91def15966406ddd0488cf9d1ecd1ae82d47a

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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.