CVE-2018-5115

HIGH

Firefox < 58 - Exposure of Sensitive Information via HTTP Authentication Prompt

Title source: llm

Description

If an HTTP authentication prompt is triggered by a background network request from a page or extension, it is displayed over the currently loaded foreground page. Although the prompt contains the real domain making the request, this can result in user confusion about the originating site of the authentication request and may cause users to mistakenly send private credential information to a third party site. This vulnerability affects Firefox < 58.

References (5)

Core 5

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1040270

Issue Tracking, Permissions Required x_refsource_confirm

https://bugzilla.mozilla.org/show_bug.cgi?id=1409449

Third Party Advisory vendor-advisory x_refsource_ubuntu

https://usn.ubuntu.com/3544-1/

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/102786

Vendor Advisory x_refsource_confirm

https://www.mozilla.org/security/advisories/mfsa2018-02/

Scores

CVSS v3 7.5

EPSS 0.0171

EPSS Percentile 82.6%

Attack Vector NETWORK

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

Details

CWE

CWE-200

Status published

Products (4)

canonical/ubuntu_linux 14.04

canonical/ubuntu_linux 16.04

canonical/ubuntu_linux 17.10

mozilla/firefox < 57.0.4

Published Jun 11, 2018

Tracked Since Feb 18, 2026