Ubuntu 4292-1: rsync vulnerabilities

    Date24 Feb 2020
    435
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in rsync.
    ==========================================================================
    Ubuntu Security Notice USN-4292-1
    February 25, 2020
    
    rsync vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in rsync.
    
    Software Description:
    - rsync: fast, versatile, remote (and local) file-copying tool
    
    Details:
    
    It was discovered that rsync incorrectly handled pointer arithmetic in zlib.
    An attacker could use this issue to cause rsync to crash, resulting in a
    denial of service, or possibly execute arbitrary code. (CVE-2016-9840,
    CVE-2016-9841)
    
    It was discovered that rsync incorrectly handled vectors involving left shifts
    of negative integers in zlib. An attacker could use this issue to cause rsync
    to crash, resulting in a denial of service, or possibly execute arbitrary
    code. (CVE-2016-9842)
    
    It was discovered that rsync incorrectly handled vectors involving big-endian
    CRC calculation in zlib. An attacker could use this issue to cause rsync to
    crash, resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2016-9843)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      rsync                           3.1.2-2.1ubuntu1.1
    
    Ubuntu 16.04 LTS:
      rsync                           3.1.1-3ubuntu1.3
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4292-1
      CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843
    
    Package Information:
      https://launchpad.net/ubuntu/+source/rsync/3.1.2-2.1ubuntu1.1
      https://launchpad.net/ubuntu/+source/rsync/3.1.1-3ubuntu1.3
    
    
    

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