Rapid7 Vulnerability & Exploit Database

Cisco XE: CVE-2019-1739: Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities

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Cisco XE: CVE-2019-1739: Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
03/28/2019
Created
08/02/2019
Added
07/30/2019
Modified
01/05/2024

Description

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.

Solution(s)

  • cisco-xe-upgrade-latest

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