Heap-based buffer overflow in Mozilla Firefox and Firefox ESR - CVE-2020-26971

Detailed vulnerability description

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

The vulnerability exists due to a boundary error within WebGL component. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

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

How to mitigate CVE-2020-26971

Sources

• https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/
• https://www.mozilla.org/en-US/security/advisories/mfsa2020-55/