Regular Expression Denial Of Service (ReDoS)

Microsoft patterns & practices Enterprise Library is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability is due a regex string with inefficient complexity located in Blocks/Common/Src/Configuration/Manageability/Adm/AdmContentBuilder.cs, which allows an attacker to input a string composed of many \ (backslash) characters followed by a " (double quote), resulting in Denial of Service by consuming excessive CPU cycles.