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CVE-2019-1739

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CVE-2019-1739

Published: Mar 27, 2019

Modified: Sep 16, 2024

PUBLISHED

CVSS v3.0

8.6

HIGH

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.

VendorProductVersions

Cisco

Cisco IOS and Cisco IOS-XE Software

affected
3.16.0S
affected
3.16.1S
affected
3.16.0aS
affected
3.16.1aS
affected
3.16.2S

+51 more versions

Weaknesses (CWE)

CWE-20

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

References

107597
vdb-entry
x_refsource_BID

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