Ubuntu 3990-2: urllib3 vulnerability

    Date 29 Jul 2019
    1368
    Posted By LinuxSecurity Advisories
    urllib3 could be used to perform a CRLF injection if it received a specially crafted request.
    ==========================================================================
    Ubuntu Security Notice USN-3990-2
    July 29, 2019
    
    python-urllib3 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 ESM
    
    Summary:
    
    urllib3 could be used to perform a CRLF injection if it received a specially
    crafted request.
    
    Software Description:
    - python-urllib3: HTTP library with thread-safe connection pooling for Python
    
    Details:
    
    USN-3990-1 fixed a vulnerability in urllib3. This update provides
    the corresponding update for Ubuntu 14.04 ESM.
    
    Original advisory details:
    
     It was discovered that urllib3 incorrectly stripped certain characters from
     requests. A remote attacker could use this issue to perform CRLF injection.
     (CVE-2019-11236)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 ESM:
      python-urllib3                  1.7.1-1ubuntu4.1+esm1
      python3-urllib3                 1.7.1-1ubuntu4.1+esm1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/3990-2
      https://usn.ubuntu.com/3990-1
      CVE-2019-11236
    

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