Vulnerability identifier: #VU9593

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7845

CWE-ID: CWE-120

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 execute arbitrary code on the target system.

The weakness exists on Windows systems due to an incorrect value being passed within the library during checks. A remote attacker can trick the victim into visiting a specially crafted website, trigger buffer overlow when drawing and validating elements using Direct 3D 9 with the ANGLE graphics library, used for WebGL content and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 57.0.2.

Vulnerable software versions

Mozilla Firefox: 55.0 - 57.0.1

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2017-29/

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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.