Vulnerability identifier: #VU5926

Vulnerability risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5406

CWE-ID: CWE-665

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 cause denial of service attack.

The vulnerability exists due in the Skia graphics library during some canvas operations due to issues with mask/clip intersection and empty masks. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger segmentation fault and cause denial of service attack.

Successful exploitation of the vulnerability may allow an attacker to crash the victim’s browser.

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.