Vulnerability identifier: #VU14150

Vulnerability risk: Low

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-2015-9251

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 when a cross-domain Ajax request is performed without the dataType option. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary text/javascript responses 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 update from vendor's website.

Vulnerable software versions

jQuery: 1.0.0 - 2.2.1

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External links
http://github.com/jquery/jquery/commit/f60729f3903d17917dc351f3ac87794de379b0cc
http://github.com/jquery/jquery/issues/2432
http://github.com/jquery/jquery/pull/2588
http://github.com/jquery/jquery/pull/2588/commits/c254d308a7d3f1eac4d0b42837804cfffcba4bb2

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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.