Ubuntu 4060-2: NSS vulnerabilities

    Date 16 Jul 2019
    2625
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in NSS.
    ==========================================================================
    Ubuntu Security Notice USN-4060-2
    July 16, 2019
    
    nss vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 ESM
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in NSS.
    
    Software Description:
    - nss: Network Security Service library
    
    Details:
    
    USN-4060-1 fixed several vulnerabilities in nss. This update provides
    the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
    
    Original advisory details:
    
     Henry Corrigan-Gibbs discovered that NSS incorrectly handled importing
     certain curve25519 private keys. An attacker could use this issue to cause
     NSS to crash, resulting in a denial of service, or possibly obtain
     sensitive information. (CVE-2019-11719)
    
     Jonas Allmann discovered that NSS incorrectly handled certain p256-ECDH
     public keys. An attacker could possibly use this issue to cause NSS to
     crash, resulting in a denial of service. (CVE-2019-11729)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 ESM:
      libnss3                         2:3.28.4-0ubuntu0.14.04.5+esm1
    
    Ubuntu 12.04 ESM:
      libnss3                         2:3.28.4-0ubuntu0.12.04.4
    
    After a standard system update you need to restart any applications that
    use NSS, such as Evolution, to make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4060-2
      https://usn.ubuntu.com/4060-1
      CVE-2019-11719, CVE-2019-11729
    

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