Security restrictions bypass in Mozilla Firefox - CVE-2018-12397
Published: October 24, 2018
Vulnerability identifier: #VU15496
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-12397
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Mozilla Firefox
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. A remote attacker can trick the victim into visiting a specially crafted website, run content scripts in local pages without permission warnings when a local file is opened.
The weakness exists due to WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. A remote attacker can trick the victim into visiting a specially crafted website, run content scripts in local pages without permission warnings when a local file is opened.
How to mitigate CVE-2018-12397
Update to version 63.0.