First published: Wed May 09 2018(Updated: )
If a URL using the "file:" protocol is dragged and dropped onto an open tab that is running in a different child process the tab will open a local file corresponding to the dropped URL, contrary to policy. One way to make the target tab open more reliably in a separate process is to open it with the "noopener" keyword. This vulnerability affects Firefox < 60.
Credit: security@mozilla.org security@mozilla.org
Affected Software | Affected Version | How to fix |
---|---|---|
Mozilla Firefox | <60 | 60 |
Canonical Ubuntu Linux | =14.04 | |
Canonical Ubuntu Linux | =16.04 | |
Canonical Ubuntu Linux | =17.10 | |
Canonical Ubuntu Linux | =18.04 | |
Mozilla Firefox | <60.0 | |
debian/firefox | 131.0.2-2 |
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(Found alongside the following vulnerabilities)
CVE-2018-5181 is a vulnerability where if a URL using the "file:" protocol is dragged and dropped onto an open tab that is running in a different child process in Mozilla Firefox, the tab will open a local file even if it goes against policy.
CVE-2018-5181 affects Mozilla Firefox versions up to and excluding 60.0, allowing a local file to be opened contrary to policy when a URL with the "file:" protocol is dragged and dropped onto an open tab running in a different process.
The severity level of CVE-2018-5181 is high, with a CVSS score of 7.5.
To fix CVE-2018-5181 in Mozilla Firefox, update your browser to version 60.0 or higher.
You can find more information about CVE-2018-5181 on the Mozilla Bugzilla website (https://bugzilla.mozilla.org/show_bug.cgi?id=1424107), the Mozilla Security Advisories website (https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/), and the SecurityFocus website (http://www.securityfocus.com/bid/104139).