CVE-2018-5136

Publication date 14 March 2018

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

A shared worker created from a "data:" URL in one tab can be shared by another tab with a different origin, bypassing the same-origin policy. This vulnerability affects Firefox < 59.

Status

Package Ubuntu Release Status
firefox 18.04 LTS bionic
Fixed 59.0.1+build1-0ubuntu1
17.10 artful
Fixed 59.0+build5-0ubuntu0.17.10.1
16.04 LTS xenial
Fixed 59.0+build5-0ubuntu0.16.04.1
14.04 LTS trusty
Fixed 59.0+build5-0ubuntu0.14.04.1

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-3596-1
    • Firefox vulnerabilities
    • 14 March 2018

Other references