CVE-2019-12659 : Exploit Details and Defense Strategies

An issue has been detected in the HTTP server code of Cisco IOS XE Software that could lead to the HTTP server crashing if exploited by an unauthorized attacker.

Understanding CVE-2019-12659

This CVE involves a vulnerability in Cisco IOS XE Software that could result in a denial of service (DoS) attack on the HTTP server.

What is CVE-2019-12659?

The vulnerability in the HTTP server code of Cisco IOS XE Software allows an attacker to crash the server by creating numerous persistent connections to the device's HTTP service.

The Impact of CVE-2019-12659

If successfully exploited, an attacker could crash the HTTP server, leading to a DoS condition.

Technical Details of CVE-2019-12659

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw in the logging mechanism of Cisco IOS XE Software allows unauthorized attackers to crash the HTTP server by overwhelming it with persistent connections.

Affected Systems and Versions

Product: Cisco IOS XE Software 3.2.0JA
Vendor: Cisco
Version: Unspecified

Exploitation Mechanism

Attacker needs to create numerous persistent connections to the device's HTTP service
Successful exploitation results in crashing the HTTP server

Mitigation and Prevention

To address CVE-2019-12659, follow these mitigation strategies:

Immediate Steps to Take

Apply vendor patches and updates promptly
Monitor network traffic for signs of exploitation
Restrict network access to the HTTP service

Long-Term Security Practices

Regularly update and patch all software and firmware
Implement network segmentation and access controls

Patching and Updates

Cisco has released patches to address this vulnerability
Ensure timely application of security updates and patches