Security restrictions bypass in Mozilla Firefox - CVE-2018-5166

Vulnerability identifier: #VU12547

CSH Severity: Low

CVSS v4: 6.9 [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]

CVE-ID: CVE-2018-5166

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to WebExtensions can use request redirection and a filterReponseData filter. A remote attacker can bypass host permission settings to redirect network traffic and access content from a host for which he does not have explicit user permission.

Mozilla Firefox
Arch Linux

Update to version 60.0.

• https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/

• Multiple vulnerabilities in Mozilla Firefox
• Arch Linux update for firefox