Linux Security
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    Ubuntu 4078-1: OpenLDAP vulnerabilities

    Date
    1504
    Posted By
    Several security issues were fixed in OpenLDAP.
    ==========================================================================
    Ubuntu Security Notice USN-4078-1
    July 30, 2019
    
    openldap vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in OpenLDAP.
    
    Software Description:
    - openldap: OpenLDAP utilities
    
    Details:
    
    It was discovered that OpenLDAP incorrectly handled rootDN delegation. A
    database administrator could use this issue to request authorization as an
    identity from another database, contrary to expectations. (CVE-2019-13057)
    
    It was discovered that OpenLDAP incorrectly handled SASL authentication and
    session encryption. After a first SASL bind was completed, it was possible
    to obtain access by performing simple binds, contrary to expectations.
    (CVE-2019-13565)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      slapd                           2.4.47+dfsg-3ubuntu2.1
    
    Ubuntu 18.04 LTS:
      slapd                           2.4.45+dfsg-1ubuntu1.3
    
    Ubuntu 16.04 LTS:
      slapd                           2.4.42+dfsg-2ubuntu3.6
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4078-1
      CVE-2019-13057, CVE-2019-13565
    
    Package Information:
      https://launchpad.net/ubuntu/+source/openldap/2.4.47+dfsg-3ubuntu2.1
      https://launchpad.net/ubuntu/+source/openldap/2.4.45+dfsg-1ubuntu1.3
      https://launchpad.net/ubuntu/+source/openldap/2.4.42+dfsg-2ubuntu3.6
    
    

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