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

Microsoft DNS Security Fix Knocks ZoneAlarm Users Offline

The vulnerability is widespread and affects products made by numerous networking and software vendors beyond Microsoft.

Users of Check Point Software's ZoneAlarm personal firewall products are reporting that a patch released Tuesday by Microsoft to fix a serious security flaw breaks their connection to the Internet.

"For those of you using ZoneAlarm who installed the Windows updates today, you probably already know that your internet connection has died," wrote user 'Winchester73', in a post Tuesday on the popular broadband forum DSLreports.com.

Numerous other forum users reported experiencing the same problem. Dozens of posters on ZoneAlarm's own user forum also reported Internet outages. "I service and administer approximately 200 privately owned computers and I have received about 20+ telephone calls from users with this problem today," wrote 'Calken'.

A spokesman for Check Point said the company planned on releasing a fix later in the day on Wednesday.

The problem began when Microsoft on Tuesday sent patch number KB951748 to Windows users. The patch is designed to plug a security vulnerability that leaves computers vulnerable to so-called DNS attacks.

The vulnerability is widespread and affects products made by numerous networking and software vendors beyond Microsoft. It was discovered by Dan Kaminsky, of the Seattle-based security firm IOActive.

Through a DNS attack, a hacker can redirect Internet users' page requests to phishing sites or other malicious pages. Various reports suggest that ZoneAlarm interprets the Microsoft patch itself as malicious code, and automatically severs the user's Internet connection in response.

Until a fix is issued, some forum users are working around the glitch by either uninstalling ZoneAlarm or the Microsoft patch. Either move, however, could leave their computers vulnerable to cyber-attacks.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
COVID-19: Latest Security News & Commentary
Dark Reading Staff 6/5/2020
How AI and Automation Can Help Bridge the Cybersecurity Talent Gap
Peter Barker, Chief Product Officer at ForgeRock,  6/1/2020
Cybersecurity Spending Hits 'Temporary Pause' Amid Pandemic
Kelly Jackson Higgins, Executive Editor at Dark Reading,  6/2/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: What? IT said I needed virus protection!
Current Issue
How Cybersecurity Incident Response Programs Work (and Why Some Don't)
This Tech Digest takes a look at the vital role cybersecurity incident response (IR) plays in managing cyber-risk within organizations. Download the Tech Digest today to find out how well-planned IR programs can detect intrusions, contain breaches, and help an organization restore normal operations.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-13864
PUBLISHED: 2020-06-05
The Elementor Page Builder plugin before 2.9.9 for WordPress suffers from a stored XSS vulnerability. An author user can create posts that result in a stored XSS by using a crafted payload in custom links.
CVE-2020-13865
PUBLISHED: 2020-06-05
The Elementor Page Builder plugin before 2.9.9 for WordPress suffers from multiple stored XSS vulnerabilities. An author user can create posts that result in stored XSS vulnerabilities, by using a crafted link in the custom URL or by applying custom attributes.
CVE-2020-11696
PUBLISHED: 2020-06-05
In Combodo iTop a menu shortcut name can be exploited with a stored XSS payload. This is fixed in all iTop packages (community, essential, professional) in version 2.7.0 and iTop essential and iTop professional in version 2.6.4.
CVE-2020-11697
PUBLISHED: 2020-06-05
In Combodo iTop, dashboard ids can be exploited with a reflective XSS payload. This is fixed in all iTop packages (community, essential, professional) for version 2.7.0 and in iTop essential and iTop professional packages for version 2.6.4.
CVE-2020-13646
PUBLISHED: 2020-06-05
In the cheetah free wifi 5.1 driver file liebaonat.sys, local users are allowed to cause a denial of service (BSOD) or other unknown impact due to failure to verify the value of a specific IOCTL.