Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Risk

7/18/2010
03:02 PM
George V. Hulme
George V. Hulme
Commentary
50%
50%

Microsoft Warns Of Critical Vulnerability

Microsoft Friday warned its customers that attackers are targeting an unpatched and critical Windows vulnerability.

Microsoft Friday warned its customers that attackers are targeting an unpatched and critical Windows vulnerability.Microsoft Security Advisory (2286198) addresses a previously known vulnerability that makes it possible to exploit removable drives. Microsoft claims it has so far seen only limited, targeted attacks:

The vulnerability exists because Windows incorrectly parses shortcuts in such a way that malicious code may be executed when the user clicks the displayed icon of a specially crafted shortcut. This vulnerability is most likely to be exploited through removable drives. For systems that have AutoPlay disabled, customers would need to manually browse to the root folder of the removable disk in order for the vulnerability to be exploited. For Windows 7 systems, AutoPlay functionality for removable disks is automatically disabled.

Anti-virus vendor Sophos warns that this vulnerability makes it possible for attackers to exploit all versions of Windows, including Windows 7:

The flaw is in how shell32.dll tries to load control panel icons from applets. By making a specially crafted shortcut pointing to a malicious file, you can make Windows Explorer blindly execute the malicious file when the location of the shortcut is merely browsed to. In this case the malicious file is a rootkit and a dropper that immediately hide the special shortcut (.lnk) files. Allowing executable code to load in the process of trying to retrieve an icon seems like a major oversight in the design of Windows.

Below is an interesting video produced by Sophos that demonstrates the attack underway.

Currently, Microsoft's advice is to disable icons for shortcuts. While a savvy home user may be able to pull that off - it's unlikely to be practical in a business environment. Most users will think their PC is "broken" and wonder why files won't launch. They also suggest disabling the WebDav WebClient. That's another less-than-ideal solution if your enterprise uses SharePoint.

That means, unfortunately, your best bet may be to make certain that your anti-malware software protects against the current batch of exploits. And wait for the inevitable patch, which hopefully comes on or before August's Patch Tuesday.

Comment  | 
Print  | 
More Insights
Comments
Threaded  |  Newest First  |  Oldest First
COVID-19: Latest Security News & Commentary
Dark Reading Staff 9/21/2020
Hacking Yourself: Marie Moe and Pacemaker Security
Gary McGraw Ph.D., Co-founder Berryville Institute of Machine Learning,  9/21/2020
Startup Aims to Map and Track All the IT and Security Things
Kelly Jackson Higgins, Executive Editor at Dark Reading,  9/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon
Current Issue
Special Report: Computing's New Normal
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
How IT Security Organizations are Attacking the Cybersecurity Problem
How IT Security Organizations are Attacking the Cybersecurity Problem
The COVID-19 pandemic turned the world -- and enterprise computing -- on end. Here's a look at how cybersecurity teams are retrenching their defense strategies, rebuilding their teams, and selecting new technologies to stop the oncoming rise of online attacks.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-25747
PUBLISHED: 2020-09-25
The Telnet service of Rubetek RV-3406, RV-3409, and RV-3411 cameras (firmware versions v342, v339) can allow a remote attacker to gain access to RTSP and ONFIV services without authentication. Thus, the attacker can watch live streams from the camera, rotate the camera, change some settings (brightn...
CVE-2020-25748
PUBLISHED: 2020-09-25
A Cleartext Transmission issue was discovered on Rubetek RV-3406, RV-3409, and RV-3411 cameras (firmware versions v342, v339). Someone in the middle can intercept and modify the video data from the camera, which is transmitted in an unencrypted form. One can also modify responses from NTP and RTSP s...
CVE-2020-25749
PUBLISHED: 2020-09-25
The Telnet service of Rubetek cameras RV-3406, RV-3409, and RV-3411 cameras (firmware versions v342, v339) could allow an remote attacker to take full control of the device with a high-privileged account. The vulnerability exists because a system account has a default and static password. The Telnet...
CVE-2020-24592
PUBLISHED: 2020-09-25
Mitel MiCloud Management Portal before 6.1 SP5 could allow an attacker, by sending a crafted request, to view system information due to insufficient output sanitization.
CVE-2020-24593
PUBLISHED: 2020-09-25
Mitel MiCloud Management Portal before 6.1 SP5 could allow a remote attacker to conduct a SQL Injection attack and access user credentials due to improper input validation.