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

7/23/2008
09:10 PM
George V. Hulme
George V. Hulme
Commentary
50%
50%

DNS Poisoning Vulnerability: If You Haven't Yet Patched, It May Be Too Late

If you've ignored the urge to patch Dan Kaminsky's DNS cache poisoning flaw, you could be on the verge of big trouble: Exploit code has just been published in a popular penetration testing tool.

If you've ignored the urge to patch Dan Kaminsky's DNS cache poisoning flaw, you could be on the verge of big trouble: Exploit code has just been published in a popular penetration testing tool.In case you've not been keeping up on all the rage in infosec for the past couple of weeks, security researcher Kaminsky announced his discovery of a DNS cache poisoning vulnerability at the same time dozens of vendors announced the availability of their fixes. Colleague Mike Fratto went into considerable detail here, here, and here. Essentially, the Domain Name Systems (DNS) that are left unfixed could be susceptible to having all of their Web traffic and e-mail redirected, and thereby snooped upon, to a system under the attacker's control.

Today, about a day after the specific details of the DNS vulnerability were released, exploit code that makes it possible to pollute DNS cache with malicious records has been added to the Metasploit security tool. That announcement is available here.

From the description of the exploit code bulletin:

This exploit targets a fairly ubiquitous flaw in DNS implementations which allow the insertion of malicious DNS records into the cache of the target nameserver. This exploit caches a single malicious host entry into the target nameserver. By causing the target nameserver to query for random hostnames at the target domain, the attacker can spoof a response to the target server including an answer for the query, an authority server record, and an additional record for that server, causing target nameserver to insert the additional record into the cache.

How many days before we learn of major sites being attacked?

 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
COVID-19: Latest Security News & Commentary
Dark Reading Staff 8/10/2020
Researcher Finds New Office Macro Attacks for MacOS
Curtis Franklin Jr., Senior Editor at Dark Reading,  8/7/2020
Hacking It as a CISO: Advice for Security Leadership
Kelly Sheridan, Staff Editor, Dark Reading,  8/10/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Special Report: Computing's New Normal, a Dark Reading Perspective
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
The Changing Face of Threat Intelligence
The Changing Face of Threat Intelligence
This special report takes a look at how enterprises are using threat intelligence, as well as emerging best practices for integrating threat intel into security operations and incident response. Download it today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-15596
PUBLISHED: 2020-08-12
The ALPS ALPINE touchpad driver before 8.2206.1717.634, as used on various Dell, HP, and Lenovo laptops, allows attackers to conduct Path Disclosure attacks via a "fake" DLL file.
CVE-2020-15868
PUBLISHED: 2020-08-12
Sonatype Nexus Repository Manager OSS/Pro before 3.26.0 has Incorrect Access Control.
CVE-2020-17362
PUBLISHED: 2020-08-12
search.php in the Nova Lite theme before 1.3.9 for WordPress allows Reflected XSS.
CVE-2020-17449
PUBLISHED: 2020-08-12
PHP-Fusion 9.03 allows XSS via the error_log file.
CVE-2020-17450
PUBLISHED: 2020-08-12
PHP-Fusion 9.03 allows XSS on the preview page.