Ubuntu 4196-1: python-ecdsa vulnerabilities

    Date 18 Nov 2019
    311
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in python-ecdsa.
    ==========================================================================
    Ubuntu Security Notice USN-4196-1
    November 18, 2019
    
    python-ecdsa vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.10
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in python-ecdsa.
    
    Software Description:
    - python-ecdsa: ECDSA cryptographic signature library
    
    Details:
    
    It was discovered that python-ecdsa incorrectly handled certain signatures.
    A remote attacker could possibly use this issue to cause python-ecdsa to
    generate unexpected exceptions, resulting in a denial of service.
    (CVE-2019-14853)
    
    It was discovered that python-ecdsa incorrectly verified DER encoding in
    signatures. A remote attacker could use this issue to perform certain
    malleability attacks. (CVE-2019-14859)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.10:
      python-ecdsa                    0.13.2-2ubuntu0.1
      python3-ecdsa                   0.13.2-2ubuntu0.1
    
    Ubuntu 19.04:
      python-ecdsa                    0.13-3ubuntu0.1
      python3-ecdsa                   0.13-3ubuntu0.1
    
    Ubuntu 18.04 LTS:
      python-ecdsa                    0.13-2ubuntu0.18.04.1
      python3-ecdsa                   0.13-2ubuntu0.18.04.1
    
    Ubuntu 16.04 LTS:
      python-ecdsa                    0.13-2ubuntu0.16.04.1
      python3-ecdsa                   0.13-2ubuntu0.16.04.1
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4196-1
      CVE-2019-14853, CVE-2019-14859
    
    Package Information:
      https://launchpad.net/ubuntu/+source/python-ecdsa/0.13.2-2ubuntu0.1
      https://launchpad.net/ubuntu/+source/python-ecdsa/0.13-3ubuntu0.1
      https://launchpad.net/ubuntu/+source/python-ecdsa/0.13-2ubuntu0.18.04.1
      https://launchpad.net/ubuntu/+source/python-ecdsa/0.13-2ubuntu0.16.04.1
    
    

    LinuxSecurity Poll

    If you are using full-disk encryption: are you concerned about the resulting performance hit?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 2 answer(s).
    /main-polls/34-if-you-are-using-full-disk-encryption-are-you-concerned-about-the-resulting-performance-hit?task=poll.vote&format=json
    34
    radio
    [{"id":"120","title":"Yes","votes":"13","type":"x","order":"1","pct":59.09,"resources":[]},{"id":"121","title":"No ","votes":"9","type":"x","order":"2","pct":40.91,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
    bottom 200

    Advisories

    Please enable / Bitte aktiviere JavaScript!
    Veuillez activer / Por favor activa el Javascript![ ? ]

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.