Vulnerabilities / Threats

1/9/2018
04:36 PM
Connect Directly
Twitter
LinkedIn
Google+
RSS
E-Mail
50%
50%

Microsoft Patches Exploited Office Bug

An Office memory corruption vulnerability is the only CVE reported as under active attack for this month's Patch Tuesday.

Microsoft today released its first wave of Patch Tuesday updates for 2018. This included fixes for a total of 56 CVEs affecting Microsoft Windows, Microsoft Office, Internet Explorer, Microsoft Edge, ChakraCore, ASP.NET, and the .NET Framework. One flaw has been exploited.

Of these 56 vulnerabilities, 16 were ranked Critical, 38 Important, one Moderate and one Low severity. Today's release includes guidance for mitigating speculative execution side-channel vulnerabilities following the news of Meltdown and Spectre attacks.

The exploited bug patched today, CVE-2018-0802, is a Critical remote code execution vulnerability in Microsoft Office that exists when software doesn't properly handle objects in memory. An attacker who successfully exploited this could run code in the context of the current user, which would let them install programs, view and edit data, or create new accounts with full user rights. It's more dangerous for victims with administrative rights.

Exploitation would require a user to open a specially crafted file with an affected version of Microsoft Office or WordPad. A threat actor could conduct a phishing attack by sending the file via email and convincing the target to open it. In a web-based attack, the attacker could host a website (or compromise a website) with a file to exploit the Office bug.

"No details of the attacks are provided by Microsoft, but the lack of industry discussion likely means this is being used in a targeted attack," writes Dustin Childs of Trend Micro's Zero Day Initiative Communications. There are multiple Office flaws patched this month, all of which Childs says "should also be given a high deployment priority."

In its exploitability assessment, Microsoft reports CVE-2018-0802 has been exploited in the wild. It states that at the time of publication, exploitation is unlikely for both its latest software release and older software release. Affected versions range from Microsoft Office 2007 Service Pack 3 to Microsoft Word 2016, 64-bit edition.

Read more details on CVE-2018-0802, including all affected versions of Office, here.

Related Content:

Kelly Sheridan is the Staff Editor at Dark Reading, where she focuses on cybersecurity news and analysis. She is a business technology journalist who previously reported for InformationWeek, where she covered Microsoft, and Insurance & Technology, where she covered financial ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
WebAuthn, FIDO2 Infuse Browsers, Platforms with Strong Authentication
John Fontana, Standards & Identity Analyst, Yubico,  9/19/2018
Turn the NIST Cybersecurity Framework into Reality: 5 Steps
Mukul Kumar & Anupam Sahai, CISO & VP of Cyber Practice and VP Product Management, Cavirin Systems,  9/20/2018
NSS Labs Files Antitrust Suit Against Symantec, CrowdStrike, ESET, AMTSO
Kelly Jackson Higgins, Executive Editor at Dark Reading,  9/19/2018
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: White Privelege Day
Current Issue
Flash Poll
The Risk Management Struggle
The Risk Management Struggle
The majority of organizations are struggling to implement a risk-based approach to security even though risk reduction has become the primary metric for measuring the effectiveness of enterprise security strategies. Read the report and get more details today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2018-17283
PUBLISHED: 2018-09-21
Zoho ManageEngine OpManager before 12.3 Build 123196 does not require authentication for /oputilsServlet requests, as demonstrated by a /oputilsServlet?action=getAPIKey request that can be leveraged against Firewall Analyzer to add an admin user via /api/json/v2/admin/addUser or conduct a SQL Inject...
CVE-2018-17282
PUBLISHED: 2018-09-20
An issue was discovered in Exiv2 v0.26. The function Exiv2::DataValue::copy in value.cpp has a NULL pointer dereference.
CVE-2018-14592
PUBLISHED: 2018-09-20
The CWJoomla CW Article Attachments PRO extension before 2.0.7 and CW Article Attachments FREE extension before 1.0.6 for Joomla! allow SQL Injection within download.php.
CVE-2018-15832
PUBLISHED: 2018-09-20
upc.exe in Ubisoft Uplay Desktop Client versions 63.0.5699.0 allows remote attackers to execute arbitrary code. 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 processing of URI ha...
CVE-2018-16282
PUBLISHED: 2018-09-20
A command injection vulnerability in the web server functionality of Moxa EDR-810 V4.2 build 18041013 allows remote attackers to execute arbitrary OS commands with root privilege via the caname parameter to the /xml/net_WebCADELETEGetValue URI.