Microsoft Visual Studio wpa Protocol XML External Entity Processing Information Disclosure Vulnerability

2019-01-10T00:00:00
ID ZDI-19-016
Type zdi
Reporter rgod of 9sg Security Team - rgod@9sgsec.com
Modified 2019-06-22T00:00:00

Description

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Visual Studio. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handler for the Windows Performance Analyzer (wpa) protocol. Due to the improper restriction of XML External Entity (XXE) references, a specially crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of the current user.