Author Topic: Major UPnP Flaw Exposes Millions to Potential Attacks  (Read 595 times)

0 Members and 1 Guest are viewing this topic.

Offline Atomic Cow

  • Hero Member
  • ****
  • Posts: 18,235
  • High Yield Minion
Major UPnP Flaw Exposes Millions to Potential Attacks
« on: February 02, 2013, 08:51:44 PM »
IDG News Service - Tens of millions of network-enabled devices including routers, printers, media servers, IP cameras, smart TVs and more can be attacked over the Internet because of dangerous flaws in their implementation of the UPnP (Universal Plug and Play) protocol standard, security researchers from Rapid7 said Tuesday in a research paper.

UPnP allows networked devices to discover each other and automatically establish working configurations that enable data sharing, media streaming, media playback control and other services. In one common scenario a file-sharing application running on a computer can tell a router via UPnP to open a specific port and map it to the computer's local network address in order to open its file-sharing service to Internet users.

UPnP is intended to be used primarily inside local networks. However, security researchers from Rapid7 found over 80 million unique public IP (Internet Protocol) addresses that responded to UPnP discovery requests over the Internet, during scans performed last year from June to November.

Furthermore, they found that 20 percent, or 17 million, of those IP addresses corresponded to devices that were exposing the UPnP SOAP (Simple Object Access Protocol) service to the Internet. This service can allow attackers to target systems behind the firewall and exposes sensitive information about them, the Rapid7 researchers said.

Based on the UPnP discovery responses the researchers were able to fingerprint unique devices and discover what UPnP library they were using. They found that over a quarter of them had UPnP implemented through a library called the Portable UPnP SDK.

Eight remotely exploitable vulnerabilities have been identified in the Portable UPnP SDK, including two that can be used for remote code execution, the researchers said.

"The vulnerabilities we identified in the Portable UPnP SDK have been fixed as of version 1.6.18 (released today), but it will take a long time before each of the application and device vendors incorporate this patch into their products," HD Moore, chief security officer at Rapid7, said Tuesday in a blog post.

http://www.computerworld.com/s/article/9236298/UPnP_flaws_expose_tens_of_millions_of_networked_devices_to_remote_attacks_researchers_say

Links below are lists of the vulnerable routers and a page from Cisco/Linksys show a (incomplete) list of their products.

https://docs.google.com/spreadsheet/ccc?key=0ApUaRDtAei07dFdOWXdKRUVaUTdRYndnbW5zajRyTmc#gid=0

https://docs.google.com/spreadsheet/ccc?key=0ApUaRDtAei07dDhwelZDQlYyQVJhbWRtUEIwVEVyRFE#gid=0

https://docs.google.com/spreadsheet/ccc?key=0ApUaRDtAei07dGxkSHN1cEN3V2pmYW4yNkpZMlQ0Rmc#gid=0

http://homekb.cisco.com/Cisco2/ukp.aspx?pid=80&app=vw&vw=1&login=1&json=1&docid=dc21a30796ae463a8ab70f2be4a61626_Information_regarding_US_CERT_Vulnerability_Note_VU_922681__.xml
"...And these atomic bombs which science burst upon the world that night were strange, even to the men who used them."  H. G. Wells, The World Set Free, 1914

"The one pervading evil of democracy is the tyranny of the majority, or rather of that party, not always the majority, that succeeds, by force or fraud, in carrying elections." -Lord Acton

Offline Atomic Cow

  • Hero Member
  • ****
  • Posts: 18,235
  • High Yield Minion
Re: Major UPnP Flaw Exposes Millions to Potential Attacks
« Reply #1 on: February 02, 2013, 08:56:13 PM »
The best solution is to simply disable UPnP in your router's control.  If there is a firmware update for the router which specficially fixes the issues, then it should be downloaded and installed, but please make sure you know how to do it so you do not brick/kill your router.

Also, if you're more technologically advanced, you can replace your router's firmware with DD-WRT firmware, provided that there is a version that is compatible with your device.

http://www.dd-wrt.com/site/index
"...And these atomic bombs which science burst upon the world that night were strange, even to the men who used them."  H. G. Wells, The World Set Free, 1914

"The one pervading evil of democracy is the tyranny of the majority, or rather of that party, not always the majority, that succeeds, by force or fraud, in carrying elections." -Lord Acton


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf