Command line arguments could have been injected during Firefox invocation as a shell handler for certain unsupported file types. This required Firefox to be configured as the default handler for a given file type and for a file downloaded to be opened in a third party application that insufficiently sanitized URL data. In that situation, clicking a link in the third party application could have been used to retrieve and execute files whose location was supplied through command line arguments. Note: This issue only affects Windows operating systems and when Firefox is configured as the default handler for non-default filetypes. Other operating systems are unaffected. This vulnerability affects Firefox < 73 and Firefox < ESR68.5.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "73",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "ESR68.5",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]