Ubuntu 2498-1: Kerberos vulnerabilities

    Date10 Feb 2015
    69
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Kerberos.
    ==========================================================================
    Ubuntu Security Notice USN-2498-1
    February 10, 2015
    
    krb5 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 Kerberos.
    
    Software Description:
    - krb5: MIT Kerberos Network Authentication Protocol
    
    Details:
    
    It was discovered that Kerberos incorrectly sent old keys in response to a
    -randkey -keepold request. An authenticated remote attacker could use this
    issue to forge tickets by leveraging administrative access. This issue
    only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
    (CVE-2014-5351)
    
    It was discovered that the libgssapi_krb5 library incorrectly processed
    security context handles. A remote attacker could use this issue to cause
    a denial of service, or possibly execute arbitrary code. (CVE-2014-5352)
    
    Patrik Kis discovered that Kerberos incorrectly handled LDAP queries with
    no results. An authenticated remote attacker could use this issue to cause
    the KDC to crash, resulting in a denial of service. (CVE-2014-5353)
    
    It was discovered that Kerberos incorrectly handled creating database
    entries for a keyless principal when using LDAP. An authenticated remote
    attacker could use this issue to cause the KDC to crash, resulting in a
    denial of service. (CVE-2014-5354)
    
    It was discovered that Kerberos incorrectly handled memory when processing
    XDR data. A remote attacker could use this issue to cause kadmind to crash,
    resulting in a denial of service, or possibly execute arbitrary code.
    (CVE-2014-9421)
    
    It was discovered that Kerberos incorrectly handled two-component server
    principals. A remote attacker could use this issue to perform impersonation
    attacks. (CVE-2014-9422)
    
    It was discovered that the libgssrpc library leaked uninitialized bytes. A
    remote attacker could use this issue to possibly obtain sensitive
    information. (CVE-2014-9423)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.10:
      krb5-admin-server               1.12.1+dfsg-10ubuntu0.1
      krb5-kdc                        1.12.1+dfsg-10ubuntu0.1
      krb5-kdc-ldap                   1.12.1+dfsg-10ubuntu0.1
      krb5-otp                        1.12.1+dfsg-10ubuntu0.1
      krb5-pkinit                     1.12.1+dfsg-10ubuntu0.1
      krb5-user                       1.12.1+dfsg-10ubuntu0.1
      libgssapi-krb5-2                1.12.1+dfsg-10ubuntu0.1
      libgssrpc4                      1.12.1+dfsg-10ubuntu0.1
      libk5crypto3                    1.12.1+dfsg-10ubuntu0.1
      libkadm5clnt-mit9               1.12.1+dfsg-10ubuntu0.1
      libkadm5srv-mit9                1.12.1+dfsg-10ubuntu0.1
      libkdb5-7                       1.12.1+dfsg-10ubuntu0.1
      libkrad0                        1.12.1+dfsg-10ubuntu0.1
      libkrb5-3                       1.12.1+dfsg-10ubuntu0.1
      libkrb5support0                 1.12.1+dfsg-10ubuntu0.1
    
    Ubuntu 14.04 LTS:
      krb5-admin-server               1.12+dfsg-2ubuntu5.1
      krb5-kdc                        1.12+dfsg-2ubuntu5.1
      krb5-kdc-ldap                   1.12+dfsg-2ubuntu5.1
      krb5-otp                        1.12+dfsg-2ubuntu5.1
      krb5-pkinit                     1.12+dfsg-2ubuntu5.1
      krb5-user                       1.12+dfsg-2ubuntu5.1
      libgssapi-krb5-2                1.12+dfsg-2ubuntu5.1
      libgssrpc4                      1.12+dfsg-2ubuntu5.1
      libk5crypto3                    1.12+dfsg-2ubuntu5.1
      libkadm5clnt-mit9               1.12+dfsg-2ubuntu5.1
      libkadm5srv-mit8                1.12+dfsg-2ubuntu5.1
      libkadm5srv-mit9                1.12+dfsg-2ubuntu5.1
      libkdb5-7                       1.12+dfsg-2ubuntu5.1
      libkrad0                        1.12+dfsg-2ubuntu5.1
      libkrb5-3                       1.12+dfsg-2ubuntu5.1
      libkrb5support0                 1.12+dfsg-2ubuntu5.1
    
    Ubuntu 12.04 LTS:
      krb5-admin-server               1.10+dfsg~beta1-2ubuntu0.6
      krb5-kdc                        1.10+dfsg~beta1-2ubuntu0.6
      krb5-kdc-ldap                   1.10+dfsg~beta1-2ubuntu0.6
      krb5-pkinit                     1.10+dfsg~beta1-2ubuntu0.6
      krb5-user                       1.10+dfsg~beta1-2ubuntu0.6
      libgssapi-krb5-2                1.10+dfsg~beta1-2ubuntu0.6
      libgssrpc4                      1.10+dfsg~beta1-2ubuntu0.6
      libk5crypto3                    1.10+dfsg~beta1-2ubuntu0.6
      libkadm5clnt-mit8               1.10+dfsg~beta1-2ubuntu0.6
      libkadm5srv-mit8                1.10+dfsg~beta1-2ubuntu0.6
      libkdb5-6                       1.10+dfsg~beta1-2ubuntu0.6
      libkrb5-3                       1.10+dfsg~beta1-2ubuntu0.6
      libkrb53                        1.10+dfsg~beta1-2ubuntu0.6
      libkrb5support0                 1.10+dfsg~beta1-2ubuntu0.6
    
    Ubuntu 10.04 LTS:
      krb5-admin-server               1.8.1+dfsg-2ubuntu0.14
      krb5-kdc                        1.8.1+dfsg-2ubuntu0.14
      krb5-kdc-ldap                   1.8.1+dfsg-2ubuntu0.14
      krb5-pkinit                     1.8.1+dfsg-2ubuntu0.14
      krb5-user                       1.8.1+dfsg-2ubuntu0.14
      libgssapi-krb5-2                1.8.1+dfsg-2ubuntu0.14
      libgssrpc4                      1.8.1+dfsg-2ubuntu0.14
      libk5crypto3                    1.8.1+dfsg-2ubuntu0.14
      libkadm5clnt-mit7               1.8.1+dfsg-2ubuntu0.14
      libkadm5srv-mit7                1.8.1+dfsg-2ubuntu0.14
      libkdb5-4                       1.8.1+dfsg-2ubuntu0.14
      libkrb5-3                       1.8.1+dfsg-2ubuntu0.14
      libkrb5support0                 1.8.1+dfsg-2ubuntu0.14
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://www.ubuntu.com/usn/usn-2498-1
      CVE-2014-5351, CVE-2014-5352, CVE-2014-5353, CVE-2014-5354,
      CVE-2014-9421, CVE-2014-9422, CVE-2014-9423
    
    Package Information:
      https://launchpad.net/ubuntu/+source/krb5/1.12.1+dfsg-10ubuntu0.1
      https://launchpad.net/ubuntu/+source/krb5/1.12+dfsg-2ubuntu5.1
      https://launchpad.net/ubuntu/+source/krb5/1.10+dfsg~beta1-2ubuntu0.6
      https://launchpad.net/ubuntu/+source/krb5/1.8.1+dfsg-2ubuntu0.14
    
    
    

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