var-201709-1071
Vulnerability from variot

A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and a denial of service (DoS) condition. The vulnerability is due to Cisco IOS Software application changes that create UDP sockets and leave the sockets idle without closing them. An attacker could exploit this vulnerability by sending UDP packets with a destination port of 0 to an affected device. A successful exploit could allow the attacker to cause UDP packets to be held in the input interfaces queue, resulting in a DoS condition. The input interface queue will stop holding UDP packets when it receives 250 packets. Cisco Bug IDs: CSCup10024, CSCva55744, CSCva95506. Cisco IOS and IOS XE contains a vulnerability related to improper shutdown and release of resources. Vendors must Bug ID CSCup10024 , CSCva55744 ,and CSCva95506 It is published as.Service operation interruption (DoS) It may be in a state. Both Cisco IOS and IOSXE are operating systems developed by Cisco for its network devices. UDPprocessing is one of the UDP (User Datagram Protocol) protocol handlers. Attackers can exploit this issue to crash the affected application, denying service to legitimate users

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