Vulnerability identifier: #VU13489

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-12367

CWE-ID: CWE-208

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 conduct timing attack.

The weakness exists due to in the previous mitigations for Spectre, the resolution or precision of various methods was reduced to counteract the ability to measure precise time intervals. A remote attacker can use PerformanceNavigationTiming as a precision timer and conduct timing attack and gain access to arbitrary data.

Mitigation
Update to version 61.0.

Vulnerable software versions

Mozilla Firefox: 60.0 - 60.0.2

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2018-15/

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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.