"TITLE":"Cisco IOS and IOS XE Software TACACS+ Client Denial of Service Vulnerability"
},
"affects":{
"vendor":{
"vendor_data":[
{
"product":{
"product_data":[
{
"product_name":"Cisco IOS Software",
"version":{
"version_data":[
{
"version_value":"n/a"
}
]
}
}
]
},
"vendor_name":"Cisco"
}
]
}
},
"data_format":"MITRE",
"data_type":"CVE",
"data_version":"4.0",
"description":{
"description_data":[
{
"lang":"eng",
"value":"A vulnerability in the TACACS+ client subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of crafted TACACS+ response packets by the affected software. An attacker could exploit this vulnerability by injecting a crafted TACACS+ packet into an existing TACACS+ session between an affected device and a TACACS+ server or by impersonating a known, valid TACACS+ server and sending a crafted TACACS+ packet to an affected device when establishing a connection to the device. To exploit this vulnerability by using either method, the attacker must know the shared TACACS+ secret and the crafted packet must be sent in response to a TACACS+ request from a TACACS+ client. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition."
}
]
},
"impact":{
"cvss":{
"baseScore":"6.8",
"version":"3.0"
}
},
"problemtype":{
"problemtype_data":[
{
"description":[
{
"lang":"eng",
"value":"CWE-20"
}
]
}
]
},
"references":{
"reference_data":[
{
"name":"20180926 Cisco IOS and IOS XE Software TACACS+ Client Denial of Service Vulnerability",