#VU28228 Cross-site scripting in jQuery
Vulnerability identifier: #VU28228
Vulnerability risk: Medium
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-79
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
jQuery
Web applications /
JS libraries
Vendor: The jQuery Team
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 within the load() function. A remote attacker can pass specially crafted HTML code to the application and execute it in browser in security context of the affected 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.
PoC:
index.html:
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.js"></script>
</head>
<body>
<div id="mydiv"></div>
<script>
$("#mydiv").load('inject.html #himom');
</script>
</body>
</html>inject.html:
<div id="himom"><script>alert('Arbitrary Code Execution');</script ></div>Mitigation
Install update from vendor's website.
Vulnerable software versions
jQuery: 1.0 - 1.8.3
External links
http://github.com/jquery/jquery/blob/9e6393b0bcb52b15313f88141d0bd7dd54227426/src/ajax.js#L203
http://snyk.io/vuln/SNYK-JS-JQUERY-569619
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. However, proof of concept for this vulnerability is available.
