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    Ubuntu 4540-1: atftpd vulnerabilities

    Date
    203
    Posted By
    Several security issues were fixed in atftpd.
    ==========================================================================
    Ubuntu Security Notice USN-4540-1
    September 24, 2020
    
    atftp vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Several security issues were fixed in atftpd.
    
    Software Description:
    - atftp: Advanced TFTP Server and Client
    
    Details:
    
    Denis Andzakovic discovered that atftpd incorrectly handled certain
    malformed packets. A remote attacker could send a specially crafted packet
    to cause atftpd to crash, resulting in a denial of service.
    (CVE-2019-11365)
    
    Denis Andzakovic discovered that atftpd did not properly lock the thread
    list mutex. An attacker could send a large number of tftpd packets
    simultaneously when running atftpd in daemon mode to cause atftpd to
    crash, resulting in a denial of service. (CVE-2019-11366)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      atftpd                          0.7.git20120829-3.1~0.18.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4540-1
      CVE-2019-11365, CVE-2019-11366
    
    Package Information:
      https://launchpad.net/ubuntu/+source/atftp/0.7.git20120829-3.1~0.18.04.1
    
    
    

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