A person having a pecuniary claim against a testate succession, whether liquidated or not, or claiming the ownership of specific items of property in the possession of the succession, may compel the executor to furnish security in an amount exceeding by one-fourth the amount of the claim, or the value of the property as shown on the inventory or the descriptive list. His verified petition for security may be presented ex parte to the court, which shall order the executor to furnish such security within ten days of the service of the order upon him.