Ubuntu 4151-1: Python vulnerabilities

    Date09 Oct 2019
    CategoryUbuntu
    511
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Python.
    ==========================================================================
    Ubuntu Security Notice USN-4151-1
    October 09, 2019
    
    python2.7, python3.5, python3.6, python3.7 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in Python.
    
    Software Description:
    - python2.7: An interactive high-level object-oriented language
    - python3.7: An interactive high-level object-oriented language
    - python3.6: An interactive high-level object-oriented language
    - python3.5: An interactive high-level object-oriented language
    
    Details:
    
    It was discovered that Python incorrectly parsed certain email addresses. A
    remote attacker could possibly use this issue to trick Python applications
    into accepting email addresses that should be denied. (CVE-2019-16056)
    
    It was discovered that the Python documentation XML-RPC server incorrectly
    handled certain fields. A remote attacker could use this issue to execute a
    cross-site scripting (XSS) attack. (CVE-2019-16935)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      python2.7                       2.7.16-2ubuntu0.2
      python2.7-minimal               2.7.16-2ubuntu0.2
      python3.7                       3.7.3-2ubuntu0.2
      python3.7-minimal               3.7.3-2ubuntu0.2
    
    Ubuntu 18.04 LTS:
      python2.7                       2.7.15-4ubuntu4~18.04.2
      python2.7-minimal               2.7.15-4ubuntu4~18.04.2
      python3.6                       3.6.8-1~18.04.3
      python3.6-minimal               3.6.8-1~18.04.3
    
    Ubuntu 16.04 LTS:
      python2.7                       2.7.12-1ubuntu0~16.04.9
      python2.7-minimal               2.7.12-1ubuntu0~16.04.9
      python3.5                       3.5.2-2ubuntu0~16.04.9
      python3.5-minimal               3.5.2-2ubuntu0~16.04.9
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4151-1
      CVE-2019-16056, CVE-2019-16935
    
    Package Information:
      https://launchpad.net/ubuntu/+source/python2.7/2.7.16-2ubuntu0.2
      https://launchpad.net/ubuntu/+source/python3.7/3.7.3-2ubuntu0.2
      https://launchpad.net/ubuntu/+source/python2.7/2.7.15-4ubuntu4~18.04.2
      https://launchpad.net/ubuntu/+source/python3.6/3.6.8-1~18.04.3
      https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.9
      https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.9
    
    
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