CVE-2024-20526
First published: Wed Oct 23 2024(Updated: )
A vulnerability in the SSH server of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition for the SSH server of an affected device. This vulnerability is due to a logic error when an SSH session is established. An attacker could exploit this vulnerability by sending crafted SSH messages to an affected device. A successful exploit could allow the attacker to exhaust available SSH resources on the affected device so that new SSH connections to the device are denied, resulting in a DoS condition. Existing SSH connections to the device would continue to function normally. The device must be rebooted manually to recover. However, user traffic would not be impacted and could be managed using a remote application such as Cisco Adaptive Security Device Manager (ASDM).
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Adaptive Security Appliance Software | =9.16.4.67 | |
| Cisco Adaptive Security Appliance Software | =9.16.4.70 | |
| Cisco Adaptive Security Appliance Software | =9.18.4.40 | |
| Cisco Adaptive Security Appliance Software | =9.20.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-20526?
CVE-2024-20526 is rated as a high severity vulnerability due to its potential to cause a denial of service condition.
How do I fix CVE-2024-20526?
To fix CVE-2024-20526, you should upgrade your Cisco Adaptive Security Appliance Software to the latest patched version.
What devices are affected by CVE-2024-20526?
CVE-2024-20526 affects specific versions of the Cisco Adaptive Security Appliance Software, including 9.16.4.67, 9.16.4.70, 9.18.4.40, and 9.20.3.
Can CVE-2024-20526 be exploited remotely?
Yes, CVE-2024-20526 can be exploited by an unauthenticated remote attacker.
What impact does CVE-2024-20526 have on my Cisco Adaptive Security Appliance?
CVE-2024-20526 can cause the SSH server on your Cisco Adaptive Security Appliance to become unresponsive, leading to a denial of service.
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- version/cisco adaptive security appliance software/9.20.3