Gentoo: GLSA-202003-55: Zsh: Privilege escalation

    Date25 Mar 2020
    274
    Posted ByLinuxSecurity Advisories
    A vulnerability in Zsh might allow an attacker to escalate privileges.
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    Gentoo Linux Security Advisory                           GLSA 202003-55
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                                               https://security.gentoo.org/
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     Severity: Normal
        Title: Zsh: Privilege escalation
         Date: March 25, 2020
         Bugs: #711136
           ID: 202003-55
    
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    Synopsis
    ========
    
    A vulnerability in Zsh might allow an attacker to escalate privileges.
    
    Background
    ==========
    
    A shell designed for interactive use, although it is also a powerful
    scripting language.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package              /     Vulnerable     /            Unaffected
        -------------------------------------------------------------------
      1  app-shells/zsh                < 5.8                       >= 5.8
    
    Description
    ===========
    
    It was discovered that Zsh was insecure dropping privileges when
    unsetting PRIVILEGED option.
    
    Impact
    ======
    
    An attacker could escalate privileges.
    
    Workaround
    ==========
    
    There is no known workaround at this time.
    
    Resolution
    ==========
    
    All Zsh users should upgrade to the latest version:
    
      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/zsh-5.8"
    
    References
    ==========
    
    [ 1 ] CVE-2019-20044
          https://nvd.nist.gov/vuln/detail/CVE-2019-20044
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     https://security.gentoo.org/glsa/202003-55
    
    Concerns?
    =========
    
    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users' machines is of utmost
    importance to us. Any security concerns should be addressed to
    This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at
    https://bugs.gentoo.org.
    
    License
    =======
    
    Copyright 2020 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).
    
    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.
    
    https://creativecommons.org/licenses/by-sa/2.5
    
    

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