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

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Cisco IOS: 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
03/27/2019
Created
04/22/2019
Added
04/04/2019
Modified
03/16/2023

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-ios-upgrade-latest

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