Vulnerability identifier: #VU5927

Vulnerability risk: Low

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

CVE-ID: CVE-2017-5407

CWE-ID: CWE-346

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to bypass same-origin policy.

The vulnerability exists due to an error when parsing SVG filters that do not use the fixed point math implementation on a target iframe. Remote attacker can create a specially crafted Web page, trick the victim into visiting it and make a malicious page can extract pixel values from a targeted user.

Successful exploitation of the vulnerability may allow an attacker to extract history information and read text values across domains.

Mitigation
Update to Firefox 52.

Vulnerable software versions

Mozilla Firefox: 50.0 - 51.0.3

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2017-05/#CVE-2017-5400

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.