#VU14638 Security restrictions bypass in Mozilla Firefox - CVE-2017-16541

Vulnerability identifier: #VU14638

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-16541

CWE-ID: CWE-20

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 security restrictions on the target system.

The vulnerability exists due to content can be loaded from the mounted file system directly using a file: URI. A remote unauthenticated attacker can use the automount feature with autofs to create a mount point on the local file system and bypass browser proxy settings.

Mitigation
Update to version 62.0.

Vulnerable software versions

Mozilla Firefox: 60.0 - 61.0.2

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2018-20/

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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.