Unfortunately, with this convenience have come multiple vulnerabilities and large-scale attacks which have exploited UPnP. However, this convenience factor provides an opening for hackers. In the case of Mirai, it allowed them to scan for these ports, and then hack into the device at the other end. Around since , QakBot infects computers, installs a key logger, and then sends banking credentials to remote Command and Control C2 servers.
This is a stealthy approach in post-exploitation because it makes it very difficult for IT security to spot any abnormalities. After all, to an admin or technician watching the network it would just appear that the user is web browsing — even though the RAT is receiving embedded commands to log keystrokes or search for PII, and exfiltrating passwords, credit card numbers, etc.
The right defense against this is to block the domains of known C2 hideouts. Of course, it becomes a cat-and-mouse game with the hackers as they find new dark spots on the Web to set up their servers as old ones are filtered out by corporate security teams. It has introduced, for lack of a better term, middle-malware, which infects computers, but not to take user credentials!
In effect, the entire Web is their playing field! When the Pinkslipbot is taking over a consumer laptop, it checks to see if UPnP is enabled. If it is, the Pinkslipbot middle-malware issues a UPnP request to the router to open up a public port.
One way for all of us to make these kinds of attacks more difficult to pull off is to simply disable the UPnP or port-forwarding feature on our home routers. In Sept. In October and November we learned that publicly exposed which implies mis-configured Docker Services were being attacked to mine cryptocurrency. The point of entry is TCP ports or , each of which defaults to providing unencrypted and unauthenticated communication. No hacking was needed, the owners of many Netgear routers do not change default passwords.
Coverage of the hacking is on the Router News page under July The Satori botnet keeps changing. We have already seen below that it attacks ports and In June , Netlab found a new variant that scans for ports 80 and Even if you don't have a Mikrotik router, the botnet is huge and dangerous, so test TCP port At the end of Sept.
It should not be exposed to the Internet, yet over 8 million devices have this port open see the March section of the Router Bugs page for more. There was a critical flaw in the Smart Install software. MikroTik routers leave TCP port open by default. It was abused by botnets in DDoS attacks in January The port is used for bandwidth testing and the company says to disable it in production. In Nov. Also, in March , an article at RedPiranha said "This port has been detected to be the most vulnerable aspect of the Huawei router as it does not validate any of the data packets sent to it whatsoever.
Fortinet also wrote about this. To test port , click here. Also, check if SSH port 22 is open. March If you own a video camera, then you may want to read about flaws in thousands of models.
In terms of routers, one of the flaws lets anyone watch the camera. Anyone who connects to TCP port that is. Test port The Mirai botnet scans for IoT devices on both ports 23 and In November , the protocol was abused to attack DSL modems. A device infected in this attack, will have its port closed by the malware to prevent new firmware from being installed. They said that Shodan reports over 41 million devices are listening on port So, test port Some D-Link routers expose port for a unknown service that had a buffer overflow flaw that let remote unauthenticated attackers run commands on the router.
D-Link said they fixed this with firmware released in August Still, can't hurt to test TCP port In December Cybereason found flaws in many IP cameras. They made an online tester for people to check if their cameras are vulnerable. The test page says the vulnerable cameras use port Printers can use multiple ports.
In Feb. This was not the first such attack and it was inspired by research published Jan More here and here and here. In July , Trend Micro found a new exploit using port In March , Trend Micro found Linux malware that also abused this port. Port This is used by the Lenovo Solution Center and was found to have security vulnerabilities in December More about this here and here.
More here and here. Test it. A bug in some Linksys routers left port open even if their web interface said that remote management was disabled. Vulnerable routers will put you into their admin console, without even asking for a password.
Port was made infamous in Jan. Other Linksys, Netgear and Cisco routers did the same. See my blog on this: How and why to check port on your router.
But, then it got worse, when in April , the "fix" merely hid the backdoor better. If your router has version 2 of the backdoor, you can't test for it. So, what the heck, test port and port See the UDP section below for links to test each. In January , it was revealed that Plex used UPnP in routers to open UDP ports and and that these were being abused in reflection amplification attacks.
Test UDP port The flaw can be attacked on UDP port LDAP is used in corporate networks and "its use directly on the internet is considered risky and is highly discouraged. It was designed by Apple who uses it for Back to My Mac. It listens on UDP port In it was discovered that over a million devices, connected to the Internet, had this port open on the WAN side. The Shadowserver Foundation scans for this daily. On Nov. The Asus infosvr service listens on UDP port It has a buggy history see here and here and here and here.
In mid-November , they found 3,, such devices. Test port and Test port The Toshiba Service Station application receives commands via this port and was found to be a security issue in December More here.
Not sure if this uses UDP, better safe than sorry. Test port A bug in Netis and Netcore routers could be exploited on port Read more here and here. From Aug. According to a mid-November scan by the Shadowserver Foundation , there are 20, vulnerable routers online, the vast majority of which are in China. Netis routers are sold in the US.
Test port In September , a backdoor was found in a D-Link router. In response, Cox created an online UPnP tester at badupnp. A good result is: "All good! On the first page, click on the gray Proceed button. A good result is when your router does not respond. Click here to test if UDP port is open on your router. A good result is a status of "filtered? As of November 7, , the botnet consists of , routers. Its a huge list, use the search function rather than paging through it.
As of Sept. Modem Tests top A modem is a computer and it too, can have bugs. Test for the existence of IP version 6 at whatismyv6. Click on the "IPv6 only Test" or go directly to ipv6. It is a good thing if ipv6.
Another site, ipv6leak. It offers many technical details and is open source see Github. The point of view here is that IP v6 is good, which I don't agree with. Test your IPv6 connectivity from cz. RouterCheck is like an anti-virus system for your router. It protects your router from hackers I have not tried it. One of the first tests: diafygi.
VPN provider Mullvad has a tester page at mullvad. In my experience, it often hangs. In March , Paolo Stagno created ip.
See his blog about it and the source code. Ads top Some routers have been hacked to generate income from showing ads. Honorable mention goes to the Shadowserver Foundation that scans the Internet for all sorts of things that should not be there. See The scannings will continue until the Internet improves. Copyright - Router Security. Download ZIP. For linux-igd, I'd use upnpd -f lo eth0 MiniUPnP My second try was MiniUPnPd , which looked more complicated than the first approach confusing arguments and several tries until I managed to properly execute it.
The following command did the trick: miniupnpd -d -i lo -a eth0 And I was able to correctly communicate with the UPnP device. Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.
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