Ubuntu 4078-2: OpenLDAP vulnerabilities

    Date19 Aug 2019
    CategoryUbuntu
    3003
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in OpenLDAP.
    ==========================================================================
    Ubuntu Security Notice USN-4078-2
    August 19, 2019
    
    openldap vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 ESM
    - Ubuntu 12.04 ESM
    
    Summary:
    
    Several security issues were fixed in OpenLDAP.
    
    Software Description:
    - openldap: OpenLDAP utilities
    
    Details:
    
    USN-4078-1 fixed several vulnerabilities in openldap. This update provides
    the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
    
    Original advisory 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 14.04 ESM:
      slapd                           2.4.31-1+nmu2ubuntu8.5+esm1
    
    Ubuntu 12.04 ESM:
      slapd                           2.4.28-1.1ubuntu4.9
    
    In general, a standard system update will make all the necessary changes.
    
    References:
      https://usn.ubuntu.com/4078-2
      https://usn.ubuntu.com/4078-1
      CVE-2019-13057, CVE-2019-13565
    
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