Use-after-free in Mozilla Firefox and Firefox ESR - CVE-2019-17008

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error during worker destruction. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and crash the application or execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

How to mitigate CVE-2019-17008

Sources

• https://www.mozilla.org/en-US/security/advisories/mfsa2019-36/
• https://www.mozilla.org/en-US/security/advisories/mfsa2019-37/