CVE-2019-1963CWE-20

Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability

High · published August 28, 2019

CVSS v3.0
7.7
EPSS
2%
Percentile
76.1
In the wild
Unconfirmed
What it is

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application on an affected device to restart unexpectedly. The vulnerability is due to improper validation of Abstract Syntax Notation One (ASN.1)-encoded variables in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the SNMP daemon on the affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

The record
Technical detail
CVSS v3.0
7.7 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01647 · 76.1th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2019-08-28T18:50Z
EPSS history
Timeline
  • 28 AUG 18:50Z
    Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability
    cvelistv5