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.

Threat Intelligence

9/24/2019
01:00 PM
50%
50%

Microsoft Defender Bug Fixed with Emergency Patch

A second out-of-band patch issued this week addresses a denial-of-service vulnerability in Microsoft Defender.

Microsoft this week released two emergency security patches: one to fix a zero-day remote code execution flaw in Internet Explorer (CVE-2019-1367), and another to address a denial-of-service (DoS) vulnerability in Microsoft Defender, which was not previously known or exploited.

The latter, CVE-2019-1255, was discovered by Charalampos Billinis of F-Secure Countercept and Wenxu Wu of Tencent Security Xuanwu Lab. A vulnerability exists when Microsoft Defender, an anti-malware feature built into Windows, improperly handles files. An attacker could exploit this to prevent legitimate accounts from executing legitimate system binaries, Microsoft says. To exploit the DoS vulnerability, an attacker would first require execution on the target system.

This week's patch alters the way Microsoft Defender handles files. The last affected version of the Microsoft Malware Protection Engine is Version 1.1.16300.1, and the first version with the vulnerability addressed is Version 1.1.16400.2. Since the Malware Protection Engine is automatically updated, Microsoft says no action is required to install the latest update. Users who don't want to wait for the update can manually update their anti-malware software.

Read more details here.

Check out The Edge, Dark Reading's new section for features, threat data, and in-depth perspectives. Today's top story: "'Playing Around' with Code Keeps Security, DevOps Skills Sharp."

Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
Navigating Security in the Cloud
Diya Jolly, Chief Product Officer, Okta,  12/4/2019
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Navigating the Deluge of Security Data
In this Tech Digest, Dark Reading shares the experiences of some top security practitioners as they navigate volumes of security data. We examine some examples of how enterprises can cull this data to find the clues they need.
Flash Poll
Rethinking Enterprise Data Defense
Rethinking Enterprise Data Defense
Frustrated with recurring intrusions and breaches, cybersecurity professionals are questioning some of the industrys conventional wisdom. Heres a look at what theyre thinking about.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-16772
PUBLISHED: 2019-12-07
The serialize-to-js NPM package before version 3.0.1 is vulnerable to Cross-site Scripting (XSS). It does not properly mitigate against unsafe characters in serialized regular expressions. This vulnerability is not affected on Node.js environment since Node.js's implementation of RegExp.prototype.to...
CVE-2019-9464
PUBLISHED: 2019-12-06
In various functions of RecentLocationApps.java, DevicePolicyManagerService.java, and RecognitionService.java, there is an incorrect warning indicating an app accessed the user's location. This could dissolve the trust in the platform's permission system, with no additional execution privileges need...
CVE-2019-2220
PUBLISHED: 2019-12-06
In checkOperation of AppOpsService.java, there is a possible bypass of user interaction requirements due to mishandling application suspend. This could lead to local information disclosure no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVers...
CVE-2019-2221
PUBLISHED: 2019-12-06
In hasActivityInVisibleTask of WindowProcessController.java there?s a possible bypass of user interaction requirements due to incorrect handling of top activities in INITIALIZING state. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction ...
CVE-2019-2222
PUBLISHED: 2019-12-06
n ihevcd_parse_slice_data of ihevcd_parse_slice.c, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-8.0 Android...