Vulnerability identifier: #VU47221

Vulnerability risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15162

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PrestaShop
Web applications / E-Commerce systems

Vendor: PrestaShop SA

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data when processing file attachments. A remote attacker can upload a file with HTML content inside, trick the victim to open the URL in browser and execute arbitrary HTML and script code in user's browser in context of 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 updates from vendor's website.

Vulnerable software versions

PrestaShop: 1.5.0.0 - 1.7.6.7

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External links
http://github.com/PrestaShop/PrestaShop/commit/2cfcd33c75974a49f17665f294f228454e14d9cf
http://github.com/PrestaShop/PrestaShop/releases/tag/1.7.6.8
http://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-rc8c-v7rq-q392

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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.