CVE-2019-15262: Cisco Wireless LAN Controller Secure Shell Denial of Service Vulnerability
First published: Wed Oct 16 2019(Updated: )
A vulnerability in the Secure Shell (SSH) session management for Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists because the SSH process is not properly deleted when an SSH connection to the device is disconnected. An attacker could exploit this vulnerability by repeatedly opening SSH connections to an affected device. A successful exploit could allow the attacker to exhaust system resources by initiating multiple SSH connections to the device that are not effectively terminated, which could result in a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco 5520 Wireless Lan Controller Firmware | <=8.5.140.0 | |
| Cisco 5520 Wireless Lan Controller | ||
| Cisco 5508 Wireless Lan Controller Firmware | <=8.5.140.0 | |
| Cisco 5508 Wireless Lan Controller |
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Reference Links
Frequently Asked Questions
What is CVE-2019-15262?
CVE-2019-15262 is a vulnerability in the Secure Shell (SSH) session management for Cisco Wireless LAN Controller (WLC) Software that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
What is the severity of CVE-2019-15262?
CVE-2019-15262 has a severity rating of 7.5 (high).
Which Cisco Wireless LAN Controller (WLC) Software versions are affected by CVE-2019-15262?
Cisco Wireless LAN Controller (WLC) Software versions up to and including 8.5.140.0 are affected by CVE-2019-15262.
How can an attacker exploit CVE-2019-15262?
This vulnerability can be exploited by an unauthenticated remote attacker by sending specially crafted SSH packets to the affected device.
Is there a fix available for CVE-2019-15262?
Yes, Cisco has released a software update to address this vulnerability. It is recommended to update to a fixed software release.
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- canonical/cisco 5520 wireless lan controller firmware
- version/cisco 5520 wireless lan controller firmware/8.5.140.0
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- canonical/cisco 5508 wireless lan controller firmware
- version/cisco 5508 wireless lan controller firmware/8.5.140.0
- canonical/cisco 5508 wireless lan controller