Ubuntu 2048-2: curl regression

    Date06 Dec 2013
    CategoryUbuntu
    36
    Posted ByLinuxSecurity Advisories
    USN-2048-1 introduced a regression in curl.
    ==========================================================================
    Ubuntu Security Notice USN-2048-2
    December 06, 2013
    
    curl regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    USN-2048-1 introduced a regression in curl.
    
    Software Description:
    - curl: HTTP, HTTPS, and FTP client and client libraries
    
    Details:
    
    USN-2048-1 fixed a vulnerability in curl. The security fix uncovered a bug
    in the curl command line tool which resulted in the --insecure (-k) option
    not working as intended. This update fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     Scott Cantor discovered that libcurl incorrectly verified CN and SAN name
     fields when digital signature verification was disabled. When libcurl is
     being used in this uncommon way by specific applications, an attacker could
     exploit this to perform a man in the middle attack to view sensitive
     information or alter encrypted communications.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.10:
      libcurl3                        7.27.0-1ubuntu1.6
    
    Ubuntu 12.04 LTS:
      libcurl3                        7.22.0-3ubuntu4.5
    
    Ubuntu 10.04 LTS:
      libcurl3                        7.19.7-1ubuntu1.5
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2048-2
      http://www.ubuntu.com/usn/usn-2048-1
      https://launchpad.net/bugs/1258366
    
    Package Information:
      https://launchpad.net/ubuntu/+source/curl/7.27.0-1ubuntu1.6
      https://launchpad.net/ubuntu/+source/curl/7.22.0-3ubuntu4.5
      https://launchpad.net/ubuntu/+source/curl/7.19.7-1ubuntu1.5
    
    
    
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