Vulnerability identifier: #VU27315

Vulnerability risk: Medium

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

CVE-ID: CVE-2020-5270

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PrestaShop
Web applications / E-Commerce systems

Vendor: PrestaShop SA

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data passed via the "back" parameter. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PrestaShop: 1.7.6.0 - 1.7.6.4

---

External links
http://github.com/PrestaShop/PrestaShop/commit/cd2219dca49965ae8421bb5a53fc301f3f23c458
http://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-375w-q56h-h7qc

---

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.