Ubuntu 4236-2: Libgcrypt vulnerability

    Date14 Jan 2020
    CategoryUbuntu
    79
    Posted ByLinuxSecurity Advisories
    Libgcrypt could be made to expose sensitive information.
    ==========================================================================
    Ubuntu Security Notice USN-4236-2
    January 14, 2020
    
    libgcrypt20 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Libgcrypt could be made to expose sensitive information.
    
    Software Description:
    - libgcrypt20: LGPL Crypto library
    
    Details:
    
    USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides the
    corresponding fix for Ubuntu 16.04 LTS.
    
    Original advisory details:
    
     It was discovered that Libgcrypt was susceptible to a ECDSA timing attack.
     An attacker could possibly use this attack to recover sensitive
     information.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      libgcrypt20                     1.6.5-2ubuntu0.6
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4236-2
      https://usn.ubuntu.com/4236-1
      CVE-2019-13627
    
    Package Information:
      https://launchpad.net/ubuntu/+source/libgcrypt20/1.6.5-2ubuntu0.6
    
    
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