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By sending a specially-crafted UDP packet to UDP port 5353, a remote attacker could exploit the vulnerability to cause the application to enter into an infinite loop. References:, Īvahi is vulnerable to a denial of service, caused by a NULL pointer dereference error within the avahi-core/socket.c. Remote attackers can perform a denial of service in WebRamp systems by sending a malicious UDP packet to port 5353, changing its IP address.Īvahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS IPv4 or IPv6 UDP packet to port 5353. TeamViewer remote desktop protocol uses ports 5938/TCP, 5939/TCP, 5353/UDPīackdoor.Optix.04.E (2004.02.10) - a backdoor trojan horse that gives an attacker unauthorized access to an infected computer by opening TCP port 5353 and listening for incoming connections. Plex Media Server uses port 5353 UDP locally for older Bonjour/Avahi network discovery. However, in an effort to make its product safe, Netgear recently partnered up with Bugcrowd to launch a bug bounty program that can earn researchers cash rewards of up to $15,000 for finding and responsibly reporting flaws in its hardware, APIs, and the mobile apps.Multicast DNS (MDNS) (IANA official) Just last month, the US-CERT advised users to stop using Netgear's R7000 and R6400 routers due to a serious bug that permitted command injection. This is the second time in around two months when researchers have discovered flaws in Netgear routers. #Hack router port 5355 upgradeNetgear has released firmware updates for all of its affected routers, and users are strongly advised to upgrade their devices. Kenin notified Netgear of the flaw, and the company confirmed the issue affects a large number of its products. #Hack router port 5355 updateUpdate the Firmware of your NETGEAR Router Now! Here's a list of affected Netgear routers: The SpiderLabs researcher stressed that the vulnerability is very serious as it affects a large number of Netgear router models. #Hack router port 5355 codeHe has also released an exploit code for testing purpose, written in Python. If exploited by bad actors, the vulnerability that completely bypasses any password on a Netgear router could give hackers complete control of the affected router, including the ability to change its configuration, turn it into botnets or even upload entirely new firmware.Īfter trying out his flaw on a range of Netgear routers, Kenin was surprised to know that more than ten thousand vulnerable devices used the flawed firmware and can be accessed remotely. ![]() This would include public Wi-Fi spaces like cafés and libraries using the vulnerable equipment." "However, anyone with physical access to a network with a vulnerable router can exploit it locally. By default this is not turned on," Kenin said. "The vulnerability can be used by a remote attacker if remote administration is set to be internet facing. While the router vendor claims the remote management option is turned off on its routers by default, according to the researcher, there are "hundreds of thousands, if not over a million" routers left remotely accessible. #Hack router port 5355 fullSo, the researcher started looking for ways to hack his own router and found a couple of exploits from 2014 that he leveraged to discover this flaw which allowed him to query routers and retrieve their login credentials easily, giving him full access to the device.īut Kenin said the newly discovered flaw could be remotely exploited only if the router's remote management option is enabled. ![]()
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