DNSChanger FAQ: The Internet Is Not Broken

You know things have gone sideways when NPR and local TV news are talking about the “Internet doomsday” or “Black Monday”. We have DNSChanger to thank for this latest bout of Internet paranoia, and there’s a ton of misinformation and craziness circulating about the malware. We’re here to provide...

Most of What You've Read About DNSChanger Is Wrong. Here's How.

If you’ve been scanning the headlines or watching the evening news, you may have heard that tens of thousands of Internet users in the U.S. – hundreds of thousands around the world – will be cut off from the Internet on Monday, July 9, after servers set up at the bequest of the U.S. government go...

Memory corruption

ISC BIND 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P1 does not properly handle resource records with a zero-length RDATA section, which allows remote DNS servers to cause a denial of service daemon crash or data corruption or obta...

CVE-2012-1667

ISC BIND 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P1 does not properly handle resource records with a zero-length RDATA section, which allows remote DNS servers to cause a denial of service daemon crash or data corruption or obta...

CVE-2012-1667

ISC BIND 9.x before 9.7.6-P1, 9.8.x before 9.8.3-P1, 9.9.x before 9.9.1-P1, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P1 does not properly handle resource records with a zero-length RDATA section, which allows remote DNS servers to cause a denial of service daemon crash or data corruption or obta...

DNSChanger Lingers: 330k Systems Still Infected, 77,000 In The U.S.

The FBI said that there are still more than 330,000 computers believed to be infected with the DNSChanger malware, with just weeks to go before a court order to cut off their ability to communicate with the rest of the Internet. Fully 77,000 are located in the U.S., according to data provided to...

Google to Notify Users of DNSChanger Infections Ahead of July 9 Deadline

With a deadline for users to disinfect their computers or potentially lose Internet access thanks to the DNSchanger malware, Google is undertaking an effort to notify infected users through messages on search results pages. The federal government also is working to warn users about the infections...

DNSChanger – Cleaning Up 4 Million Infected Hosts

By Kurt Baumgartner The FBI’s “Operation Ghost Click” announcement in Nov 2011, involving the Rove Digital botnet delayed cleanup efforts that we previously discussed, continues to haunt both the internet networks and the mass media. A Forbes article and a Times article yesterday brought the...

Microsoft DNS Server Denial of Service (MS12-017; CVE-2012-0006)

A denial of service vulnerability has been reported in Microsoft DNS servers...

Facebook down for two hours across Europe, May be DDOS attack !

Facebook down for two hours across Europe, May be DDOS attack ! In a DDoS attack, hackers deliberately render servers inaccessible by overloading them with traffic. Such a barrage aimed at DNS servers can make it impossible to connect users to a website when they type the address. Where as facebo...

Mac OS X DNS Server Enumeration

Nessus was able to enumerate the DNS servers configured on the remote Mac OS X host by looking in /etc/resolv.conf. TRUSTED...

Researchers Warn Of 'Ghost Domain' Flaw in DNS

Researchers are warning about a flaw in the Domain Name System DNS that could allow attackers to keep a malicious domain alive and accessible, despite efforts to remove it. A paper jointly authored by researchers in China, the United States and Spain found that a flaw in DNS allows deleted domain...

broadcast-dhcp6-discover NSE Script

Sends a DHCPv6 request Solicit to the DHCPv6 multicast address, parses the response, then extracts and prints the address along with any options returned by the server. The script requires Nmap to be run in privileged mode as it binds the socket to a privileged port udp/546. See also:...

White House Wades into Piracy Legislation Debate

Officials with the Obama administration said the White House will not support anti-piracy bills that endanger cybersecurity or freedom of expression on the Web. In a post Saturday on the White House blog, three top technology officials for the administration – Victoria Espinel, intellectual...

Bypass SOPA (Stop Online Piracy Act) DNS Blocking with DeSopa 1.1

Bypass SOPA Stop Online Piracy Act DNS Blocking with DeSopa 1.1 A developer who calls himself T Rizk doesn't have much faith in Congress making the right decision on anti-piracy legislation, so he's built a work around for the impending censorship measures being considered DeSOPA. The Firefox...

CVE-2011-4869

validator/valnsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service daemon crash via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528...

CVE-2011-4869

validator/valnsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service daemon crash via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528...

CVE-2011-4528

Unbound before 1.4.13p2 attempts to free unallocated memory during processing of duplicate CNAME records in a signed zone, which allows remote DNS servers to cause a denial of service daemon crash via a crafted response...

Two Million Requests from Infected Systems In Week After Ghost Click Takedown

The FBI says that more than 2.5 million systems infected with the DNSChanger malware connected to DNS servers set up by the authorities in the week following a crackdown on a global criminal network dubbed Ghost Click. The data, which was provided to the FBI by ISC, is the best indication yet of...

TDSS Rootkit and DNSchanger: An Unholy Alliance

The TDSS rootkit has proven to be more pliable and adaptable than a campaigning politician, and attackers have used it in various forms for the last three or four years for all sorts of different attacks. It shows up in drive-by downloads, targeted attacks and just about everything in between, an...