What is the severity of CVE-2019-1957?

CVE-2019-1957 is considered to have a high severity rating due to its potential to cause denial of service.

How do I fix CVE-2019-1957?

To fix CVE-2019-1957, update the Cisco IoT Field Network Director to version 4.4.2-12 or later.

What devices are affected by CVE-2019-1957?

CVE-2019-1957 affects Cisco IoT Field Network Director versions up to 4.4.2-11.

Can CVE-2019-1957 be exploited remotely?

Yes, CVE-2019-1957 can be exploited by an unauthenticated, remote attacker.

What is the primary impact of CVE-2019-1957?

The primary impact of CVE-2019-1957 is high CPU usage leading to a denial of service condition on affected devices.

Vulnerability/
CVE-2019-1957

high

7.8

CWE

399

8/8/2019

19/11/2024

CVE-2019-1957: Cisco IoT Field Network Director TLS Renegotiation Denial of Service Vulnerability

First published: Thu Aug 08 2019(Updated: )

A vulnerability in the web interface of Cisco IoT Field Network Director could allow an unauthenticated, remote attacker to trigger high CPU usage, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of Transport Layer Security (TLS) renegotiation requests. An attacker could exploit this vulnerability by sending renegotiation requests at a high rate. A successful exploit could increase the resource usage on the system, eventually leading to a DoS condition.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IoT Field Network Director	<4.4.2-11

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-fnd-dos

Frequently Asked Questions

What is the severity of CVE-2019-1957?
CVE-2019-1957 is considered to have a high severity rating due to its potential to cause denial of service.
How do I fix CVE-2019-1957?
To fix CVE-2019-1957, update the Cisco IoT Field Network Director to version 4.4.2-12 or later.
What devices are affected by CVE-2019-1957?
CVE-2019-1957 affects Cisco IoT Field Network Director versions up to 4.4.2-11.
Can CVE-2019-1957 be exploited remotely?
Yes, CVE-2019-1957 can be exploited by an unauthenticated, remote attacker.
What is the primary impact of CVE-2019-1957?
The primary impact of CVE-2019-1957 is high CPU usage leading to a denial of service condition on affected devices.

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Frequently Asked Questions

What is the severity of CVE-2019-1957?
CVE-2019-1957 is considered to have a high severity rating due to its potential to cause denial of service.
How do I fix CVE-2019-1957?
To fix CVE-2019-1957, update the Cisco IoT Field Network Director to version 4.4.2-12 or later.
What devices are affected by CVE-2019-1957?
CVE-2019-1957 affects Cisco IoT Field Network Director versions up to 4.4.2-11.
Can CVE-2019-1957 be exploited remotely?
Yes, CVE-2019-1957 can be exploited by an unauthenticated, remote attacker.
What is the primary impact of CVE-2019-1957?
The primary impact of CVE-2019-1957 is high CPU usage leading to a denial of service condition on affected devices.