#VU7841 Spoofing attack in Mozilla Firefox - CVE-2017-7791

Vulnerability identifier: #VU7841

Vulnerability risk: Low

CVSSv4.0: 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-2017-7791

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Mozilla Firefox

Software vendor:
Mozilla

The vulnerability allows a remote attacker to conduct spoofing attack on the target system.

The weakness exists due to improper input validation. A remote attacker can trick the victim into visiting a specially crafted website and use iframe content and the 'data:' protocol to spoof the origin of a modal alert.

Update to version 55.0.

• https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/