Linux Security
    Linux Security
    Linux Security

    ArchLinux: 202002-4: ksh: arbitrary command execution

    Date
    601
    Posted By
    The package ksh before version 2020.0.0-2 is vulnerable to arbitrary command execution.
    Arch Linux Security Advisory ASA-202002-4
    =========================================
    
    Severity: High
    Date    : 2020-02-08
    CVE-ID  : CVE-2019-14868
    Package : ksh
    Type    : arbitrary command execution
    Remote  : No
    Link    : https://security.archlinux.org/AVG-1095
    
    Summary
    =======
    
    The package ksh before version 2020.0.0-2 is vulnerable to arbitrary
    command execution.
    
    Resolution
    ==========
    
    Upgrade to 2020.0.0-2.
    
    # pacman -Syu "ksh>=2020.0.0-2"
    
    The problem has been fixed upstream but no release is available yet.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    A flaw was found in ksh version 2020.0.0 in the evaluation of certain
    environment variables. An attacker could use this flaw to override or
    bypass environment restrictions to execute shell commands. Services and
    applications that allow remote unauthenticated attackers to provide one
    of those environment variables could allow them to exploit this issue
    remotely.
    
    Impact
    ======
    
    An attacker is able to execute arbitrary commands that are blacklisted
    on the affected host.
    
    References
    ==========
    
    https://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2
    https://security.archlinux.org/CVE-2019-14868
    

    LinuxSecurity Poll

    How are you contributing to Open Source?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 4 answer(s).
    /main-polls/37-how-are-you-contributing-to-open-source?task=poll.vote&format=json
    37
    radio
    [{"id":"127","title":"I'm involved with the development of an open-source project(s).","votes":"2","type":"x","order":"1","pct":100,"resources":[]},{"id":"128","title":"I've reported vulnerabilities I've discovered in open-source code.","votes":"0","type":"x","order":"2","pct":0,"resources":[]},{"id":"129","title":"I've provided developers with feedback on their projects.","votes":"0","type":"x","order":"3","pct":0,"resources":[]},{"id":"130","title":"I've helped another community member get started contributing to Open Source.","votes":"0","type":"x","order":"4","pct":0,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350


    VIEW MORE POLLS

    bottom 200

    Please enable / Bitte aktiviere JavaScript!
    Veuillez activer / Por favor activa el Javascript![ ? ]

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.