This security advisory describes one high risk vulnerability.
Added information about in the wild exploitation of the vulnerability, raised severity risk to High.
The vulnerability allows a remote attacker to bypass sandbox restrictions.
The vulnerability exists due to insufficient vetting of parameters passed with the
IPC message between child and parent processes. A remote attacker can create a specially crafted web page that can make the non-sandboxed parent process open web content chosen by a compromised child process.
An attacker can combine this behavior along with another vulnerability to execute arbitrary code on the system with privileges on the current user.
Note, this vulnerability is being exploited in the wild along with SB2019061805 (CVE-2019-11707)Mitigation
Install updates from vendor's website.Vulnerable software versions
Firefox ESR: 60.0, 60.0.1, 60.0.2, 60.1.0, 60.2.0, 60.2.1, 60.2.2, 60.3.0, 60.4.0, 60.5.0, 60.5.1, 60.5.2, 60.6.0, 60.6.1, 60.6.2, 60.6.3, 60.7.0, 60.7.1
Mozilla Firefox: 61.0, 61.0.1, 61.0.2, 62.0, 62.0.1, 62.0.2, 62.0.3, 63.0, 63.0.1, 63.0.3, 64.0, 64.0.1, 64.0.2, 65.0, 65.0.1, 65.0.2, 66.0, 66.0.1, 66.0.2, 66.0.3, 66.0.4, 66.0.5, 67.0, 67.0.1, 67.0.2, 67.0.3CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.