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CVE-2018-5108

Published: 23 January 2018

A Blob URL can violate origin attribute segregation, allowing it to be accessed from a private browsing tab and for data to be passed between the private browsing tab and a normal tab. This could allow for the leaking of private information specific to the private browsing context. This issue is mitigated by the requirement that the user enter the Blob URL manually in order for the access violation to occur. This vulnerability affects Firefox < 58.

Priority

Medium

Cvss 3 Severity Score

4.3

Score breakdown

Status

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

Severity score breakdown

Parameter Value
Base score 4.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N