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-2017-7840 (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.
JavaScript can be injected into an exported bookmarks file by placing JavaScript code into user-supplied tags in saved bookmarks. If the resulting exported HTML file is later opened in a browser this JavaScript will be executed. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks if users were convinced to add malicious tags to bookmarks, export them, and then open the resulting file. This vulnerability affects Firefox < 57.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7840
- https://security-tracker.debian.org/tracker/CVE-2017-7840
- https://www.mozilla.org/security/advisories/mfsa2017-24/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1366420
- http://www.securityfocus.com/bid/101832
- http://www.securitytracker.com/id/1039803