CVE-2017-5420

MEDIUM

Firefox < 52.0 - Address Bar Spoofing via JavaScript URL Obfuscation

Title source: llm

Description

A "javascript:" url loaded by a malicious page can obfuscate its location by blanking the URL displayed in the addressbar, allowing for an attacker to spoof an existing page without the malicious page's address being displayed correctly. This vulnerability affects Firefox < 52.

References (4)

Core 4

Core References

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2017-05/

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1037966

Exploit, Issue Tracking, Patch, Vendor Advisory x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=1284395

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/96692

Scores

CVSS v3 6.5

EPSS 0.0040

EPSS Percentile 60.8%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Details

CWE

CWE-20

Status published

Products (1)

mozilla/firefox < 52.0

Published Jun 11, 2018

Tracked Since Feb 18, 2026