ArchLinux: 202001-3: firefox: arbitrary code execution

    Date13 Jan 2020
    CategoryArchLinux
    72
    Posted ByLinuxSecurity Advisories
    The package firefox before version 72.0.1-1 is vulnerable to arbitrary code execution.
    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
    
    
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