Gentoo: GLSA-201906-01: Exim: Remote command execution

    Date06 Jun 2019
    CategoryGentoo
    2328
    Posted ByLinuxSecurity Advisories
    A vulnerability in Exim could allow a remote attacker to execute arbitrary commands.
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    Gentoo Linux Security Advisory                           GLSA 201906-01
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                                               https://security.gentoo.org/
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     Severity: High
        Title: Exim: Remote command execution
         Date: June 06, 2019
         Bugs: #687336
           ID: 201906-01
    
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    Synopsis
    ========
    
    A vulnerability in Exim could allow a remote attacker to execute
    arbitrary commands.
    
    Background
    ==========
    
    Exim is a message transfer agent (MTA) designed to be a a highly
    configurable, drop-in replacement for sendmail.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package              /     Vulnerable     /            Unaffected
        -------------------------------------------------------------------
      1  mail-mta/exim                 < 4.92 >= 4.92
    
    Description
    ===========
    
    A vulnerability was discovered in how Exim validates recipient
    addresses in the deliver_message() function.
    
    Impact
    ======
    
    A remote attacker could execute arbitrary commands by sending an email
    with a specially crafted recipient address to the affected system.
    
    Workaround
    ==========
    
    There is no known workaround at this time.
    
    Resolution
    ==========
    
    All Exim users should upgrade to the latest version:
    
      # emerge --sync
      # emerge --ask --oneshot --verbose ">=mail-mta/exim-4.92"
    
    References
    ==========
    
    [ 1 ] CVE-2019-10149
          https://nvd.nist.gov/vuln/detail/CVE-2019-10149
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     https://security.gentoo.org/glsa/201906-01
    
    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 2019 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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