CVE-2020-3434: Input Validation
First published: Mon Aug 17 2020(Updated: )
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process on an affected device. A successful exploit could allow the attacker to stop the AnyConnect process, causing a DoS condition on the device. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Anyconnect Secure Mobility Client | <=4.9.00086 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3434?
CVE-2020-3434 is a vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows.
What is the severity of CVE-2020-3434?
The severity of CVE-2020-3434 is medium with a severity value of 5.5.
What is affected by CVE-2020-3434?
Cisco AnyConnect Secure Mobility Client for Windows version 4.9.00086 is affected by CVE-2020-3434.
How can CVE-2020-3434 be exploited?
An authenticated, local attacker would need valid credentials to exploit CVE-2020-3434 and cause a denial of service (DoS) condition on an affected device.
Where can I find more information about CVE-2020-3434?
You can find more information about CVE-2020-3434 in the Cisco Security Advisory at https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dos-feXq4tAV.
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