Remote code execution in Mozilla Firefox

1) Buffer overflow

EUVDB-ID: #VU9593

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 - Buffer overflow

Exploit availability: No

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

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

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