Improper Preservation of Permissions Affecting firefox package, versions <60.0+build2-0ubuntu0.16.04.1
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-424593
- published11 Jun 2018
- disclosed11 Jun 2018
Introduced: 11 Jun 2018
CVE-2018-5163 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 firefox to version 60.0+build2-0ubuntu0.16.04.1 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.
If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode Cache (JSBC) for other JavaScript code. If the parent process then runs this replaced code, the executed script would be run with the parent process' privileges, escaping the sandbox on content processes. This vulnerability affects Firefox < 60.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-5163
- https://security-tracker.debian.org/tracker/CVE-2018-5163
- https://www.mozilla.org/security/advisories/mfsa2018-11/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353
- http://www.securityfocus.com/bid/104139
- http://www.securitytracker.com/id/1040896
- https://usn.ubuntu.com/3645-1/