search

Bedework / bw-calendar-engine

Bedework: Calendar Engine
11 stars 8 forks source link

XXE via MitM / Malicious Server in IscheduleClient #3

Open prodigysml opened 5 years ago

prodigysml commented 5 years ago

The Issue

An XML External Entity attack is a type of attack against an application that parses XML input. This attack occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. This attack may lead to the disclosure of confidential data, denial of service, server side request forgery, port scanning from the perspective of the machine where the parser is located, and other system impacts.

Where the Issue Occurred

https://github.com/Bedework/bw-calendar-engine/blob/6c99a071ca573a23a8c99674c8f9980169b5f535/bw-calendar-engine-impl/src/main/java/org/bedework/calsvc/scheduling/hosts/IscheduleClient.java#L422

Remediation

https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Prevention_Cheat_Sheet

NicoleG25 commented 4 years ago

Hi, do you plan to address this vulnerability? :) Note that it appears CVE-2018-1000836 was assigned to this issue.