First published: Tue Sep 03 2019(Updated: )
Logging-related command line parameters are not properly sanitized when Firefox is launched by another program, such as when a user clicks on malicious links in a chat application. This can be used to write a log file to an arbitrary location such as the Windows 'Startup' folder. Note: this issue only affects Firefox on Windows operating systems.
Credit: security@mozilla.org
Affected Software | Affected Version | How to fix |
---|---|---|
Mozilla Firefox ESR | <68.1 | 68.1 |
Mozilla Firefox | <69.0 | |
Mozilla Firefox ESR | <68.1.0 | |
Microsoft Windows | ||
<68.1 | 68.1 | |
Mozilla Firefox | <69 | 69 |
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(Found alongside the following vulnerabilities)
CVE-2019-11751 is a vulnerability in Firefox where logging-related command line parameters are not properly sanitized when Firefox is launched by another program, allowing for the writing of a log file to an arbitrary location.
CVE-2019-11751 affects Mozilla Firefox versions up to and including Firefox 69 and Firefox ESR 68.1.
CVE-2019-11751 has a severity rating of 9, which is considered critical.
CVE-2019-11751 can be exploited by launching Firefox through another program and using malicious links in a chat application to write a log file to an arbitrary location.
The recommended remedy for CVE-2019-11751 is to update Firefox to version 68.2 or later.