Ubuntu 2537-1: OpenSSL vulnerabilities

    Date19 Mar 2015
    CategoryUbuntu
    48
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in OpenSSL.
    ==========================================================================
    Ubuntu Security Notice USN-2537-1
    March 19, 2015
    
    openssl vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Several security issues were fixed in OpenSSL.
    
    Software Description:
    - openssl: Secure Socket Layer (SSL) cryptographic library and tools
    
    Details:
    
    It was discovered that OpenSSL incorrectly handled malformed EC private key
    files. A remote attacker could possibly use this issue to cause OpenSSL to
    crash, resulting in a denial of service, or execute arbitrary code.
    (CVE-2015-0209)
    
    Stephen Henson discovered that OpenSSL incorrectly handled comparing ASN.1
    boolean types. A remote attacker could possibly use this issue to cause
    OpenSSL to crash, resulting in a denial of service. (CVE-2015-0286)
    
    Emilia Käsper discovered that OpenSSL incorrectly handled ASN.1 structure
    reuse. A remote attacker could possibly use this issue to cause OpenSSL to
    crash, resulting in a denial of service, or execute arbitrary code.
    (CVE-2015-0287)
    
    Brian Carpenter discovered that OpenSSL incorrectly handled invalid
    certificate keys. A remote attacker could possibly use this issue to cause
    OpenSSL to crash, resulting in a denial of service. (CVE-2015-0288)
    
    Michal Zalewski discovered that OpenSSL incorrectly handled missing outer
    ContentInfo when parsing PKCS#7 structures. A remote attacker could
    possibly use this issue to cause OpenSSL to crash, resulting in a denial of
    service, or execute arbitrary code. (CVE-2015-0289)
    
    Robert Dugal and David Ramos discovered that OpenSSL incorrectly handled
    decoding Base64 encoded data. A remote attacker could possibly use this
    issue to cause OpenSSL to crash, resulting in a denial of service, or
    execute arbitrary code. (CVE-2015-0292)
    
    Sean Burford and Emilia Käsper discovered that OpenSSL incorrectly handled
    specially crafted SSLv2 CLIENT-MASTER-KEY messages. A remote attacker could
    possibly use this issue to cause OpenSSL to crash, resulting in a denial of
    service. (CVE-2015-0293)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.10:
      libssl1.0.0                     1.0.1f-1ubuntu9.4
    
    Ubuntu 14.04 LTS:
      libssl1.0.0                     1.0.1f-1ubuntu2.11
    
    Ubuntu 12.04 LTS:
      libssl1.0.0                     1.0.1-4ubuntu5.25
    
    Ubuntu 10.04 LTS:
      libssl0.9.8                     0.9.8k-7ubuntu8.27
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2537-1
      CVE-2015-0209, CVE-2015-0286, CVE-2015-0287, CVE-2015-0288,
      CVE-2015-0289, CVE-2015-0292, CVE-2015-0293
    
    Package Information:
      https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu9.4
      https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.11
      https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.25
      https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.27
    
    
    
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