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CVE-2019-1739

HIGH
Published 2019-03-27T23:20:12.539060Z
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CVSS Score

V3.0
8.6
/10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.404
Higher than 40.4% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco IOS and Cisco IOS-XE Software

Affected Versions:

3.16.0S 3.16.1S 3.16.0aS 3.16.1aS 3.16.2S 3.16.2aS 3.16.0bS 3.16.0cS 3.16.3S 3.16.2bS 3.16.3aS 3.16.4S 3.16.4aS 3.16.4bS 3.16.4gS 3.16.5S 3.16.4cS 3.16.4dS 3.16.4eS 3.16.5aS 3.17.0S 3.17.1S 3.17.2S 3.17.1aS 3.17.3S 3.17.4S 3.2.0JA 16.2.1 16.2.2 16.3.1 16.3.2 16.3.3 16.3.1a 16.3.4 16.4.1 16.4.2 16.4.3 16.5.1 16.5.1a 16.5.1b 3.18.0aS 3.18.0S 3.18.1S 3.18.2S 3.18.3S 3.18.4S 3.18.0SP 3.18.1SP 3.18.1aSP 3.18.1gSP 3.18.1bSP 3.18.1cSP 3.18.2SP 3.18.1hSP 3.18.2aSP 3.18.1iSP

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-2xhp-rj78-v5hh

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2019-1739
WEB https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nbar
WEB http://www.securityfocus.com/bid/107597

Advisory provided by GitHub Security Advisory Database. Published: May 13, 2022, Modified: May 13, 2022

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nbar
http://www.securityfocus.com/bid/107597
Published: 2019-03-27T23:20:12.539060Z
Last Modified: 2024-09-16T20:07:37.827Z
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