Security researcher SandboxEscaper released a working proof-of-concept (PoC) exploit for a new Windows zero-day vulnerability.H
The security researcher SandboxEscaper is back and for the third time in a few months, released proof-of-concept (PoC) exploit for a new zero-day vulnerability affecting Microsoft’s Windows OS.
Since August, SandboxEscaper has publicly dropped exploits for two Windows zero-day vulnerabilities forcing Microsoft to quickly address them to avoid its users being targeted by hackers.
The last Windows zero-day flaw disclosed by SandboxEscaper is an arbitrary file read vulnerability that could be exploited by a low-privileged user or a malicious program to read the content of any file on a Windows system.
The Windows zero-day flaw affects the”MsiAdvertiseProduct” function that generates an advertise script or advertises a product to the computer. The MsiAdvertiseProduct function enables the installer to write to a script the registry and shortcut information used to assign or publish a product. The script can be written to be consistent with a specified platform by using MsiAdvertiseProductEx.
According to the SandboxEscaper, the lack of proper validation could allow an attacker to force installer service into making a copy of any file as SYSTEM privileges and read its content.
“Even without an enumeration vector, this is still bad news, because a lot of document software, like office, will actually keep files in static locations that contain the full path and file names of recently opened documents..,” explained the expert.
“Thus by reading files like this, you can get filenames of documents created by other users.. the filesystem is a spiderweb and references to user-created files can be found everywhere.. so not having an enumeration bug is not that big of a deal.“
SandboxEscaper published a video PoC of the vulnerability and also a proof-of-concept (PoC) exploit on Github (The GitHub account of the researcher was blocked).
In October, SandboxEscaper released the proof-of-concept exploit code for Microsoft Data Sharing that allowed a low privileged user to delete critical system files from Windows systems.
In August, SandboxEscaper released the PoC exploit for a local privilege escalation flaw in Microsoft Windows Task Scheduler.
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”.