Cross-site Scripting (XSS) Affecting firefox package, versions <57.0+build4-0ubuntu0.16.04.5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Jun 2018
- disclosed11 Jun 2018
Introduced: 11 Jun 2018
CVE-2017-7834 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 firefox to version 57.0+build4-0ubuntu0.16.04.5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7834
- https://security-tracker.debian.org/tracker/CVE-2017-7834
- https://www.mozilla.org/security/advisories/mfsa2017-24/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1358009
- http://www.securityfocus.com/bid/101832
- http://www.securitytracker.com/id/1039803