Incorrect Permission Assignment for Critical Resource Affecting firefox package, versions <64.0+build3-0ubuntu0.16.04.1
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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Test your applications- Snyk IDSNYK-UBUNTU1604-FIREFOX-425835
- published13 Dec 2018
- disclosed28 Feb 2019
Introduced: 13 Dec 2018
CVE-2018-18495 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 firefox to version 64.0+build3-0ubuntu0.16.04.1 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.
WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions. This vulnerability affects Firefox < 64.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-18495
- https://security-tracker.debian.org/tracker/CVE-2018-18495
- https://www.mozilla.org/security/advisories/mfsa2018-29/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1427585
- http://www.securityfocus.com/bid/106167
- https://usn.ubuntu.com/3844-1/