Ubuntu 3691-1: OpenJDK 7 vulnerabilities

    Date21 Jun 2018
    CategoryUbuntu
    4979
    Posted ByAnthony Pell
    Several security issues were fixed in OpenJDK 7.
    ==========================================================================
    Ubuntu Security Notice USN-3691-1
    June 21, 2018
    
    openjdk-7 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in OpenJDK 7.
    
    Software Description:
    - openjdk-7: Open Source Java implementation
    
    Details:
    
    It was discovered that the Security component of OpenJDK did not correctly
    perform merging of multiple sections for the same file listed in JAR
    archive file manifests. An attacker could possibly use this to modify
    attributes in a manifest without invalidating the signature.
    (CVE-2018-2790)
    
    Francesco Palmarini, Marco Squarcina, Mauro Tempesta, and Riccardo Focardi
    discovered that the Security component of OpenJDK did not restrict which
    classes could be used when deserializing keys from the JCEKS key stores. An
    attacker could use this to specially craft a JCEKS key store to execute
    arbitrary code. (CVE-2018-2794)
    
    It was discovered that the Security component of OpenJDK in some situations
    did not properly limit the amount of memory allocated when performing
    deserialization. An attacker could use this to cause a denial of service
    (memory exhaustion). (CVE-2018-2795)
    
    It was discovered that the Concurrency component of OpenJDK in some
    situations did not properly limit the amount of memory allocated when
    performing deserialization. An attacker could use this to cause a denial of
    service (memory exhaustion). (CVE-2018-2796)
    
    It was discovered that the JMX component of OpenJDK in some situations did
    not properly limit the amount of memory allocated when performing
    deserialization. An attacker could use this to cause a denial of service
    (memory exhaustion). (CVE-2018-2797)
    
    It was discovered that the AWT component of OpenJDK in some situations did
    not properly limit the amount of memory allocated when performing
    deserialization. An attacker could use this to cause a denial of service
    (memory exhaustion). (CVE-2018-2798)
    
    It was discovered that the JAXP component of OpenJDK in some situations did
    not properly limit the amount of memory allocated when performing
    deserialization. An attacker could use this to cause a denial of service
    (memory exhaustion). (CVE-2018-2799)
    
    Moritz Bechler discovered that the RMI component of OpenJDK enabled HTTP
    transport for RMI servers by default. A remote attacker could use this to
    gain access to restricted services. (CVE-2018-2800)
    
    It was discovered that a vulnerability existed in the Hotspot component of
    OpenJDK affecting confidentiality, data integrity, and availability. An
    attacker could use this to specially craft an Java application that caused
    a denial of service or bypassed sandbox restrictions. (CVE-2018-2814)
    
    Apostolos Giannakidis discovered that the Serialization component of
    OpenJDK did not properly bound memory allocations in some situations. An
    attacker could use this to cause a denial of service (memory exhaustion).
    (CVE-2018-2815)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      icedtea-7-jre-jamvm             7u181-2.6.14-0ubuntu0.1
      openjdk-7-jre                   7u181-2.6.14-0ubuntu0.1
      openjdk-7-jre-headless          7u181-2.6.14-0ubuntu0.1
      openjdk-7-jre-lib               7u181-2.6.14-0ubuntu0.1
      openjdk-7-jre-zero              7u181-2.6.14-0ubuntu0.1
    
    This update uses a new upstream release, which includes additional bug
    fixes. After a standard system update you need to restart any Java
    applications or applets to make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/usn/usn-3691-1
      CVE-2018-2790, CVE-2018-2794, CVE-2018-2795, CVE-2018-2796,
      CVE-2018-2797, CVE-2018-2798, CVE-2018-2799, CVE-2018-2800,
      CVE-2018-2814, CVE-2018-2815
    
    Package Information:
      https://launchpad.net/ubuntu/+source/openjdk-7/7u181-2.6.14-0ubuntu0.1
    
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