Information disclosure in Mozilla Firefox - CVE-2018-12402

Vulnerability identifier: #VU15502

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2018-12402

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Mozilla

Affected software:
Mozilla Firefox

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to SameSite cookies are sent on cross-origin requests when the "Save Page As..." menu item is selected to save a page. A remote attacker can trick the victim into visiting a specially crafted website and gain access to SameSite cookies.

Update to version 63.0.

• https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/