OS Command Injection in Mozilla Firefox - CVE-2019-9804
Published: March 21, 2019
Vulnerability identifier: #VU18042
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-9804
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Mozilla Firefox
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper validation data passed via the 'Copy as cURL' functionality in Firefox Developer Tools on macOS. A remote attacker can trick the victim to copy a specially crafted link and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: the vulnerability affects macOS users only.
How to mitigate CVE-2019-9804
Install updates from vendor's website.