A security expert found a flaw in SharePoint that could be exploited to remotely execute arbitrary code by sending a specially crafted SharePoint application package.
Summary: A few days ago I saw a post from Alienvault which says attackers are still exploiting SharePoint vulnerability to attack Middle East government organization. Having said that I found Income Tax Department India and MIT Sloan was also vulnerable to CVE-2019-0604 a remote code execution vulnerability which exists in Microsoft SharePoint. A malicious actor could exploit this vulnerability by simply sending a specially crafted SharePoint application package.
Technical analysis: I found this vulnerability during my free time while I was browsing to ZoomEye to find such component. The application (incometaxindia.gov.in) was found to be vulnerable as it was using SharePoint as a technology to host its service. To verify this I’ve sent a crafted payload which enable the remote server (incometaxindia.gov.in) to perform a DNS lookup on my burp collaborator. You can do this manual by sending the crafted XML payload or via desharialize.
Responsible Disclosure: CERT-In (IncomeTaxIndia) This was sent to CERT-In on Feb 12, 2020, got initial responseby them on Feb 13, 2020. Post that the vulnerability was patch silently. For MIT: This was sent to MIT security team on Feb 13, 2020, got initial response by them on Feb 14, 2020. Post that the vulnerability was patch silently on Feb 15, 2020.
About the Author: Security Researcher Dhiraj Mishra (@mishradhiraj)
Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer.
Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US.
Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines.
Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.