CVE-2017-7834
Publication date 15 November 2017
Last updated 25 August 2025
Ubuntu priority
Description
A "data:" URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when "data:" documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks. This vulnerability affects Firefox < 57.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | 18.04 LTS bionic |
Fixed 57.0.1+build2-0ubuntu1
|
| 16.04 LTS xenial |
Fixed 57.0+build4-0ubuntu0.16.04.5
|
|
| 14.04 LTS trusty |
Fixed 57.0+build4-0ubuntu0.14.04.4
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.1 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-3477-1
- Firefox vulnerabilities
- 16 November 2017