Security restrictions bypass in Mozilla Firefox - CVE-2018-18495

Vulnerability identifier: #VU16490

CSH Severity: Low

CVSS v4.0: 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-2018-18495

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Mozilla

Affected software:
Mozilla Firefox

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

The weakness exists due to WebExtension content scripts can be loaded into about: pages in some circumstances. A remote attacker can use a specially crafted extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions.

Update to version 64.0.

• https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/