ID:6611 - Exploit for Use-after-free in Mozilla Firefox and Firefox ESR - CVE-2021-29985

Link to public exploit:

Vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a use-after-free error in media channels within the MediaCacheStream::NotifyDataReceived method. A remote attacker can trick the victim to open a specially crafted web page, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation