medium
4.3
CWE
191
Advisory Published
Updated

CVE-2024-20474: Integer Underflow

First published: Wed Oct 23 2024(Updated: )

A vulnerability in Internet Key Exchange version 2 (IKEv2) processing of Cisco Secure Client Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of Cisco Secure Client. This vulnerability is due to an integer underflow condition. An attacker could exploit this vulnerability by sending a crafted IKEv2 packet to an affected system. A successful exploit could allow the attacker to cause Cisco Secure Client Software to crash, resulting in a DoS condition on the client software. Note: Cisco Secure Client Software releases 4.10 and earlier were known as Cisco AnyConnect Secure Mobility Client.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco AnyConnect Secure=4.9.00086
Cisco AnyConnect Secure=4.9.01095
Cisco AnyConnect Secure=4.9.02028
Cisco AnyConnect Secure=4.9.03047
Cisco AnyConnect Secure=4.9.03049
Cisco AnyConnect Secure=4.9.04043
Cisco AnyConnect Secure=4.9.04053
Cisco AnyConnect Secure=4.9.05042
Cisco AnyConnect Secure=4.9.06037
Cisco Secure Client - AnyConnect VPN=4.10.00093
Cisco Secure Client - AnyConnect VPN=4.10.01075
Cisco Secure Client - AnyConnect VPN=4.10.02086
Cisco Secure Client - AnyConnect VPN=4.10.03104
Cisco Secure Client - AnyConnect VPN=4.10.04065
Cisco Secure Client - AnyConnect VPN=4.10.04071
Cisco Secure Client - AnyConnect VPN=4.10.05085
Cisco Secure Client - AnyConnect VPN=4.10.05095
Cisco Secure Client - AnyConnect VPN=4.10.05111
Cisco Secure Client - AnyConnect VPN=4.10.06079
Cisco Secure Client - AnyConnect VPN=4.10.06090
Cisco Secure Client - AnyConnect VPN=4.10.07061
Cisco Secure Client - AnyConnect VPN=4.10.07062
Cisco Secure Client - AnyConnect VPN=4.10.07073
Cisco Secure Client - AnyConnect VPN=4.10.08025
Cisco Secure Client - AnyConnect VPN=4.10.08029
Cisco Secure Client - AnyConnect VPN=5.0.00238
Cisco Secure Client - AnyConnect VPN=5.0.00529
Cisco Secure Client - AnyConnect VPN=5.0.00556
Cisco Secure Client - AnyConnect VPN=5.0.01242
Cisco Secure Client - AnyConnect VPN=5.0.02075
Cisco Secure Client - AnyConnect VPN=5.0.03072
Cisco Secure Client - AnyConnect VPN=5.0.03076
Cisco Secure Client - AnyConnect VPN=5.0.04032
Cisco Secure Client - AnyConnect VPN=5.0.05040
Cisco Secure Client - AnyConnect VPN=5.1.0.136
Cisco Secure Client - AnyConnect VPN=5.1.1.42
Cisco Secure Client - AnyConnect VPN=5.1.2.42
Cisco Secure Client - AnyConnect VPN=5.1.3.62

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-20474?

    CVE-2024-20474 has been rated as critical severity due to its potential to cause a denial of service in Cisco Secure Client Software.

  • How do I fix CVE-2024-20474?

    To fix CVE-2024-20474, upgrade Cisco Secure Client to the latest version recommended by Cisco.

  • What versions of Cisco software are affected by CVE-2024-20474?

    CVE-2024-20474 affects specific versions of Cisco AnyConnect Secure Mobility Client and Cisco Secure Client software, including various versions listed in the advisory.

  • Can CVE-2024-20474 be exploited remotely?

    Yes, CVE-2024-20474 can be exploited by an unauthenticated remote attacker.

  • What does CVE-2024-20474 allow an attacker to do?

    CVE-2024-20474 allows an attacker to trigger a denial of service condition in Cisco Secure Client Software.

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