Gentoo: GLSA-202006-23: Cyrus IMAP Server: Access restriction bypass

    Date 15 Jun 2020
    115
    Posted By LinuxSecurity Advisories
    An error in Cyrus IMAP Server allows mailboxes to be created with administrative privileges.
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    Gentoo Linux Security Advisory                           GLSA 202006-23
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                                               https://security.gentoo.org/
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     Severity: Normal
        Title: Cyrus IMAP Server: Access restriction bypass
         Date: June 15, 2020
         Bugs: #703630
           ID: 202006-23
    
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    Synopsis
    ========
    
    An error in Cyrus IMAP Server allows mailboxes to be created with
    administrative privileges.
    
    Background
    ==========
    
    The Cyrus IMAP Server is an efficient, highly-scalable IMAP e-mail
    server.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package              /     Vulnerable     /            Unaffected
        -------------------------------------------------------------------
      1  net-mail/cyrus-imapd         < 3.0.13                  >= 3.0.13 
    
    Description
    ===========
    
    An issue was discovered in Cyrus IMAP Server where sieve script
    uploading is excessively trusted.
    
    Impact
    ======
    
    A user can use a sieve script to create any mailbox with administrator
    privileges.
    
    Workaround
    ==========
    
    Disable sieve script uploading until the upgrade is complete.
    
    Resolution
    ==========
    
    All Cyrus IMAP Server users should upgrade to the latest version:
    
      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-mail/cyrus-imapd-3.0.13"
    
    References
    ==========
    
    [ 1 ] CVE-2019-19783
          https://nvd.nist.gov/vuln/detail/CVE-2019-19783
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     https://security.gentoo.org/glsa/202006-23
    
    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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