CVE-2018-5105

Published: 23 January 2018

WebExtensions can bypass user prompts to first save and then open an arbitrarily downloaded file. This can result in an executable file running with local user privileges without explicit user consent. This vulnerability affects Firefox < 58.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	artful	Released (58.0+build6-0ubuntu0.17.10.1)
	bionic	Released (59.0.1+build1-0ubuntu1)
	trusty	Released (58.0+build6-0ubuntu0.14.04.1)
	upstream	Released (58.0)
	xenial	Released (58.0+build6-0ubuntu0.16.04.1)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

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