CVE-2019-1739CWE-20

Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities

High · published March 27, 2019

CVSS v3.0
8.6
EPSS
3%
Percentile
84.7
In the wild
Unconfirmed
What it is

A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

The record
Technical detail
CVSS v3.0
8.6 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.02516 · 84.7th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2019-03-27T23:20Z
EPSS history
Timeline
  • 27 MAR 23:20Z
    Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities
    cvelistv5