Cross-site Scripting (XSS) Affecting firefox package, versions <59.0.1+build1-0ubuntu1
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-2018-5143 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 firefox to version 59.0.1+build1-0ubuntu1 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:18.04 relevant fixed versions and status.
URLs using "javascript:" have the protocol removed when pasted into the addressbar to protect users from cross-site scripting (XSS) attacks, but if a tab character is embedded in the "javascript:" URL the protocol is not removed and the script will execute. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Firefox < 59.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-5143
- https://security-tracker.debian.org/tracker/CVE-2018-5143
- https://www.mozilla.org/security/advisories/mfsa2018-06/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1422643
- http://www.securityfocus.com/bid/103386
- http://www.securitytracker.com/id/1040514
- https://usn.ubuntu.com/3596-1/