What is CVE-2019-12659?

CVE-2019-12659 is a vulnerability in the HTTP server code of Cisco IOS XE Software that could allow an unauthenticated remote attacker to crash the HTTP server.

How does CVE-2019-12659 affect Cisco IOS XE Software?

CVE-2019-12659 affects Cisco IOS XE Software versions 16.10.1.

What is the severity of CVE-2019-12659?

CVE-2019-12659 has a severity rating of 7.5 (high).

How can an attacker exploit CVE-2019-12659?

An attacker can exploit CVE-2019-12659 by generating a high amount of long HTTP requests.

Is there a fix for CVE-2019-12659?

Yes, Cisco has released a security advisory with steps to mitigate the vulnerability. Please refer to the following link for more information: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-httpserv-dos

Vulnerability/
CVE-2019-12659

high

7.5

CWE

400 399

25/9/2019

4/8/2024

CVE-2019-12659: Cisco IOS XE Software HTTP Server Denial of Service Vulnerability

First published: Wed Sep 25 2019(Updated: )

A vulnerability in the HTTP server code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the HTTP server to crash. The vulnerability is due to a logical error in the logging mechanism. An attacker could exploit this vulnerability by generating a high amount of long-lived connections to the HTTP service on the device. A successful exploit could allow the attacker to cause the HTTP server to crash.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XE	=16.10.1
Cisco cBR-8 Converged Broadband Router

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-httpserv-dos

Frequently Asked Questions

What is CVE-2019-12659?
CVE-2019-12659 is a vulnerability in the HTTP server code of Cisco IOS XE Software that could allow an unauthenticated remote attacker to crash the HTTP server.
How does CVE-2019-12659 affect Cisco IOS XE Software?
CVE-2019-12659 affects Cisco IOS XE Software versions 16.10.1.
What is the severity of CVE-2019-12659?
CVE-2019-12659 has a severity rating of 7.5 (high).
How can an attacker exploit CVE-2019-12659?
An attacker can exploit CVE-2019-12659 by generating a high amount of long HTTP requests.
Is there a fix for CVE-2019-12659?
Yes, Cisco has released a security advisory with steps to mitigate the vulnerability. Please refer to the following link for more information: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-httpserv-dos

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canonical/cisco cbr-8 converged broadband router

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