Arch Linux Security Advisory ASA-202001-3
========================================
Severity: Critical
Date    : 2020-01-10
CVE-ID  : CVE-2019-17026
Package : firefox
Type    : arbitrary code execution
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1085

Summary
======
The package firefox before version 72.0.1-1 is vulnerable to arbitrary
code execution.

Resolution
=========
Upgrade to 72.0.1-1.

# pacman -Syu "firefox>=72.0.1-1"

The problem has been fixed upstream in version 72.0.1.

Workaround
=========
None.

Description
==========
A type confusion vulnerability has been found in Firefox before 72.0.1.
Incorrect alias information in IonMonkey JIT compiler for setting array
elements could lead to a type confusion with StoreElementHole and
FallibleStoreElement. Mozilla is aware of targeted attacks in the wild
abusing this flaw.

Impact
=====
A remote attacker can execute arbitrary code on the affected host.

References
=========
https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/
https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/#CVE-2019-17026
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443
https://security.archlinux.org/CVE-2019-17026

ArchLinux: 202001-3: firefox: arbitrary code execution

January 13, 2020

Summary

A type confusion vulnerability has been found in Firefox before 72.0.1. Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion with StoreElementHole and FallibleStoreElement. Mozilla is aware of targeted attacks in the wild abusing this flaw.

Resolution

Upgrade to 72.0.1-1. # pacman -Syu "firefox>=72.0.1-1"
The problem has been fixed upstream in version 72.0.1.

References

https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/ https://www.mozilla.org/en-US/security/advisories/mfsa2020-03/#CVE-2019-17026 https://bugzilla.mozilla.org/show_bug.cgi?id=1607443 https://security.archlinux.org/CVE-2019-17026

Severity
Package : firefox
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-1085

Workaround

None.

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