Ubuntu 3928-1: Dovecot vulnerability

    Date01 Apr 2019
    CategoryUbuntu
    899
    Posted ByLinuxSecurity Advisories
    Dovecot could be made to crash or run programs as an administrator if it opened a specially crafted file.
    ==========================================================================
    Ubuntu Security Notice USN-3928-1
    April 01, 2019
    
    dovecot vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.10
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Dovecot could be made to crash or run programs as an administrator
    if it opened a specially crafted file.
    
    Software Description:
    - dovecot: IMAP and POP3 email server
    
    Details:
    
    It was discovered that Dovecot incorrectly handled reading certain headers
    from the index. A local attacker could possibly use this issue to escalate
    privileges.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.10:
      dovecot-core                    1:2.3.2.1-1ubuntu3.2
    
    Ubuntu 18.04 LTS:
      dovecot-core                    1:2.2.33.2-1ubuntu4.3
    
    Ubuntu 16.04 LTS:
      dovecot-core                    1:2.2.22-1ubuntu2.10
    
    Ubuntu 14.04 LTS:
      dovecot-core                    1:2.2.9-1ubuntu2.6
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3928-1
      CVE-2019-7524
    
    Package Information:
      https://launchpad.net/ubuntu/+source/dovecot/1:2.3.2.1-1ubuntu3.2
      https://launchpad.net/ubuntu/+source/dovecot/1:2.2.33.2-1ubuntu4.3
      https://launchpad.net/ubuntu/+source/dovecot/1:2.2.22-1ubuntu2.10
      https://launchpad.net/ubuntu/+source/dovecot/1:2.2.9-1ubuntu2.6
    
    
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