Arbitrary Code Execution via Insufficient Parameter Vetting in Prompt:Open IPC Message

CVE-2019-11708 · HIGH Severity

AV:N/AC:L/AU:N/C:C/I:C/A:C

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.

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