CVE-2017-7808

Publication date 10 August 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A content security policy (CSP) "frame-ancestors" directive containing origins with paths allows for comparisons against those paths instead of the origin. This results in a cross-origin information leak of this path information. This vulnerability affects Firefox < 55.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	19.04 disco	Fixed 55.0.2+build1-0ubuntu4
	18.10 cosmic	Fixed 55.0.2+build1-0ubuntu4
	18.04 LTS bionic	Fixed 55.0.2+build1-0ubuntu4
	17.10 artful	Fixed 55.0.2+build1-0ubuntu4
	17.04 zesty	Fixed 55.0.1+build2-0ubuntu0.17.04.2
	16.04 LTS xenial	Fixed 55.0.1+build2-0ubuntu0.16.04.2
	14.04 LTS trusty	Fixed 55.0.1+build2-0ubuntu0.14.04.2
mozjs38	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not affected
	17.10 artful	Ignored end of life
	17.04 zesty	Ignored end of life
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

tyhicks

mozjs38 contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N