Red Hat Ansible Templating Information Disclosure Vulnerability [CVE-2019-10156]

CVE number – CVE-2019-10156

  • A vulnerability in Red Hat Ansible could allow an authenticated, remote attacker to access sensitive information on a targeted system. The vulnerability exists because the affected software does not properly implement templating.
  • An attacker could exploit this vulnerability by taking advantage of unintended variable substitutions on a targeted system. A successful exploit could allow the attacker to access sensitive information, such as the content of any variable, on the system.
  • Red Hat has confirmed the vulnerability and released software updates.


  • To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit


  • Administrators are advised to apply the appropriate updates.

    Administrators are advised to allow only trusted users to have network access.

    Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.

    Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

    Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

    Administrators are advised to monitor affected systems.

Vendor Announcements

  • Red Hat has released a pull request at the following link: Pull #57188

Fixed Software

Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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