Cross-site scripting in Shopware - #VU18670
Published: June 4, 2019
Vulnerability identifier: #VU18670
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Green
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Shopware
Affected software:
Shopware
Shopware
Detailed vulnerability 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 passed after the "/backend/Login" URL. A remote attacker can trick the victim to follow a specially crafted link 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.
Examples:
http://[host]/backend/Login?'"--></style></scRipt><scRipt>alert(“test”)</scRipt>
http://[host]/backend/Login/load/?'"--></style></scRipt><scRipt>alert(“test”)</scRipt>
Remediation
Install updates from vendor's website.