SB2020010819 - Remote code execution in Mozilla Firefox and Firefox ESR

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Main Vulnerability Database SB2020010819

SB2020010819 - Remote code execution in Mozilla Firefox and Firefox ESR

Published: January 8, 2020

Security Bulletin ID SB2020010819
Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Type Confusion (CVE-ID: CVE-2019-17026)

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

The vulnerability exists due to a type confusion error with StoreElementHole and FallibleStoreElement when processing HTML content in IonMonkey JIT compiler. A remote attacker can create a specially crafted webpage, trick the victim into visiting it, trigger a type confusion error and execute arbitrary code on the target system.

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

Note, this vulnerability is being actively exploited in the wild.


Remediation

Install update from vendor's website.

References