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.

Analytics

Exploits Emerge for Microsoft Vulnerability

MS06-040, expected to be precursor to a major worm, may instead morph into a botnet

Security researchers have spotted the first attacks designed to exploit the critical vulnerability exposed in Microsoft Windows last week.

The vulnerabilities emerged as part of Microsoft's MS06-040 security patch, rolled out last Tuesday. (See Microsoft's Big Patch Day.) However, these initial exploits take the form of a low-risk botnet, rather than the damaging worm that many experts still expect.

The botnet, which has been called Cuebot-L, Graweg, and Mocbot, spreads like a worm via AOL Instant Messenger. Once it infects a PC, it turns off the Windows firewall and opens a back door, allowing remote attackers to gain access and control, according to researchers at SophosLabs.

Researchers at LURHQ Corp., a Chicago security management firm that has studied the botnet/worm, say there are two variants of the worm so far. The code is actually a modified version of an exploit that was written last year to take advantage of Microsoft's MS05-039 PNP vulnerability, they say.

The botnet is a relatively low-level threat and is remedied by the Microsoft patch, the researchers say.

Security experts continue to hunt for other, more dangerous attacks that exploit the MS06-040 vulnerability, which is considered to be a real danger because it provides a relatively easy way to gain remote access to PCs and laptops. (See How to Protect Against the MS06-040 Attack.) HD Moore, co-creator of the Metasploit Framework, publicly released his exploit on Thursday, and Symantec confirmed that Moore's code results in a denial-of-service attack.

— Tim Wilson, Site Editor, Dark Reading

  • Microsoft Corp. (Nasdaq: MSFT)
  • Sophos plc
  • Symantec Corp. (Nasdaq: SYMC) Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

    Comment  | 
    Print  | 
    More Insights
  • Comments
    Newest First  |  Oldest First  |  Threaded View
    Edge-DRsplash-10-edge-articles
    7 Old IT Things Every New InfoSec Pro Should Know
    Joan Goodchild, Staff Editor,  4/20/2021
    News
    Cloud-Native Businesses Struggle With Security
    Robert Lemos, Contributing Writer,  5/6/2021
    Commentary
    Defending Against Web Scraping Attacks
    Rob Simon, Principal Security Consultant at TrustedSec,  5/7/2021
    Register for Dark Reading Newsletters
    White Papers
    Video
    Cartoon
    Current Issue
    2021 Top Enterprise IT Trends
    We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
    Flash Poll
    How Enterprises are Developing Secure Applications
    How Enterprises are Developing Secure Applications
    Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
    Twitter Feed
    Dark Reading - Bug Report
    Bug Report
    Enterprise Vulnerabilities
    From DHS/US-CERT's National Vulnerability Database
    CVE-2021-22668
    PUBLISHED: 2021-05-16
    Delta Industrial Automation CNCSoft ScreenEditor Versions 1.01.28 (with ScreenEditor Version 1.01.2) and prior are vulnerable to an out-of-bounds read while processing project files, which may allow an attacker to execute arbitrary code.
    CVE-2021-29039
    PUBLISHED: 2021-05-16
    Cross-site scripting (XSS) vulnerability in the Asset module's categories administration page in Liferay Portal 7.3.4 allows remote attackers to inject arbitrary web script or HTML via the site name.
    CVE-2020-16632
    PUBLISHED: 2021-05-15
    A XSS Vulnerability in /uploads/dede/action_search.php in DedeCMS V5.7 SP2 allows an authenticated user to execute remote arbitrary code via the keyword parameter.
    CVE-2021-32073
    PUBLISHED: 2021-05-15
    DedeCMS V5.7 SP2 contains a CSRF vulnerability that allows a remote attacker to send a malicious request to to the web manager allowing remote code execution.
    CVE-2021-33033
    PUBLISHED: 2021-05-14
    The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value.