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    Security Advisory- Ex Libris Patron Directory Services (PDS) Security vulnerability Updated: April 3, 2019

     Subject: Ex Libris Patron Directory Services (PDS) Security vulnerability Updated: April 3, 2019


    PDS is used to integrate Ex Libris products with the institutional identity management systems (such as LDAP and Shibboleth).  A Critical ranked vulnerability has been discovered in the Ex Libris PDS component.  The vulnerability, if exploited by an attacker, could compromise the security of PDS.

    Effective Security Severity Level:


    Ex Libris implemented a security solution on April 2, 2019.

    Affected Systems:

    PDS products that are installed and used locally at customer facilities, including: Aleph, Voyager, DigiTool, Primo, MetaLib, Rosetta, and Verde.

    Tests and Certifications:

    The fix for this vulnerability has been developed, tested and certified for all of Ex Libris products that are using PDS.

    Actions Taken for Hosted Systems:

    Ex Libris has already deployed the fix to all cloud environments and no action is required by our cloud customers.

    Actions To Be Taken for On-Premise Systems

    Ex Libris is asking customers to implement the fix as soon as possible, according to the instructions provided below:

    1. Log into the PDS server as the relevant application user (aleph/primo/metalib etc...)
    2. Restart apache – Make sure apache restart was successful before moving on to the next step.
    3. Execute the following commands:

    pdsroot; cd program
    wget --connect-timeout=60
    restart apache 


    Record of Changes

    Type of information Document Data

    Document Title:

    Security Advisory- Ex Libris Patron Directory Services (PDS) Security Vulnerability

    Document Owner:

    Tomer Shemesh - Ex Libris Chief Information Security Officer (CISO)

    Approved by:

    Barak Rozenblat – VP Cloud Services


    July 08, 2016

    Reviewed & Revised:

    Apr 03, 2019


    Revision Control

    Version Number Nature of Change Date Approved


    Initial version

    July 08, 2016



    Apr 03, 2019

    Document Distribution and Review

    The document owner will distribute this document to all approvers when it is first created and as changes or updates are made. This document will be reviewed and updated annually or upon written request by an approver or stakeholder. Questions or feedback about this document can be directed to the owner or a listed approver