Risk
7/9/2008
02:29 PM
Connect Directly
RSS
E-Mail
50%
50%

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
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-6117
Published: 2014-07-11
Dahua DVR 2.608.0000.0 and 2.608.GV00.0 allows remote attackers to bypass authentication and obtain sensitive information including user credentials, change user passwords, clear log files, and perform other actions via a request to TCP port 37777.

CVE-2014-0174
Published: 2014-07-11
Cumin (aka MRG Management Console), as used in Red Hat Enterprise MRG 2.5, does not include the HTTPOnly flag in a Set-Cookie header for the session cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie.

CVE-2014-3485
Published: 2014-07-11
The REST API in the ovirt-engine in oVirt, as used in Red Hat Enterprise Virtualization (rhevm) 3.4, allows remote authenticated users to read arbitrary files and have other unspecified impact via unknown vectors, related to an XML External Entity (XXE) issue.

CVE-2014-3499
Published: 2014-07-11
Docker 1.0.0 uses world-readable and world-writable permissions on the management socket, which allows local users to gain privileges via unspecified vectors.

CVE-2014-3503
Published: 2014-07-11
Apache Syncope 1.1.x before 1.1.8 uses weak random values to generate passwords, which makes it easier for remote attackers to guess the password via a brute force attack.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Marilyn Cohodas and her guests look at the evolving nature of the relationship between CIO and CSO.