Buffer overflow in Cisco Nexus 9000 Series Switches in ACI Mode - CVE-2019-1901
Published: August 1, 2019
Vulnerability details
The vulnerability allows an attacker to cause a denial of service (DoS) condition or execute arbitrary code with root privileges.
The vulnerability exists due to improper input validation of certain type, length, value (TLV) fields of the Link Layer Discovery Protocol (LLDP) frame header. An attacker can send a specially crafted LLDP packet to the targeted device, trigger memory corruption and cause a DoS condition or execute arbitrary code with root privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: This vulnerability cannot be exploited by transit traffic through the device; the crafted packet must be targeted to a directly connected interface.