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CVE-2017-7823

Published: 2 October 2017

The content security policy (CSP) "sandbox" directive did not create a unique origin for the document, causing it to behave as if the "allow-same-origin" keyword were always specified. This could allow a Cross-Site Scripting (XSS) attack to be launched from unsafe content. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

Priority

Medium

Cvss 3 Severity Score

5.4

Score breakdown

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
artful
Released (56.0+build6-0ubuntu1)
bionic
Released (56.0+build6-0ubuntu1)
trusty
Released (56.0+build6-0ubuntu0.14.04.1)
upstream
Released (56.0)
xenial
Released (56.0+build6-0ubuntu0.16.04.1)
zesty
Released (56.0+build6-0ubuntu0.17.04.1)
thunderbird
Launchpad, Ubuntu, Debian
artful
Released (1:52.4.0+build1-0ubuntu2)
bionic
Released (1:52.4.0+build1-0ubuntu2)
trusty
Released (1:52.4.0+build1-0ubuntu0.14.04.2)
upstream
Released (52.4.0)
xenial
Released (1:52.4.0+build1-0ubuntu0.16.04.2)
zesty
Released (1:52.4.0+build1-0ubuntu0.17.04.2)

Severity score breakdown

Parameter Value
Base score 5.4
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N