Ubuntu 4236-3: Libgcrypt vulnerability

    Date28 Jan 2020
    146
    Posted ByLinuxSecurity Advisories
    Libgcrypt could be made to expose sensitive information.
    ==========================================================================
    Ubuntu Security Notice USN-4236-3
    January 28, 2020
    
    libgcrypt11 vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 ESM
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Libgcrypt could be made to expose sensitive information.
    
    Software Description:
    - libgcrypt11: LGPL Crypto library
    
    Details:
    
    USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides
    the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
    
    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 14.04 ESM:
      libgcrypt11                     1.5.3-2ubuntu4.6+esm1
    
    Ubuntu 12.04 ESM:
      libgcrypt11                     1.5.0-3ubuntu0.9
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4236-3
      https://usn.ubuntu.com/4236-1
      CVE-2019-13627
    
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