Multiple vulnerabilities in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition in the AnyConnect service on an affected device.
These vulnerabilities are due to insufficient validation of client-supplied parameters while establishing an SSL VPN session. An attacker could exploit these vulnerabilities by sending a crafted HTTPS request to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to restart, resulting in the failure of the established SSL VPN connections and forcing remote users to initiate a new VPN connection and reauthenticate. A sustained attack could prevent new SSL VPN connections from being established.
Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention.
Metrics
Affected Vendors & Products
References
History
Wed, 02 Oct 2024 19:30:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Cisco
Cisco meraki Mx Cisco meraki Z1 |
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CPEs | cpe:2.3:h:cisco:meraki_mx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:meraki_z1:-:*:*:*:*:*:*:* |
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Vendors & Products |
Cisco
Cisco meraki Mx Cisco meraki Z1 |
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Metrics |
ssvc
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Wed, 02 Oct 2024 18:45:00 +0000
Type | Values Removed | Values Added |
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Description | Multiple vulnerabilities in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition in the AnyConnect service on an affected device. These vulnerabilities are due to insufficient validation of client-supplied parameters while establishing an SSL VPN session. An attacker could exploit these vulnerabilities by sending a crafted HTTPS request to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to restart, resulting in the failure of the established SSL VPN connections and forcing remote users to initiate a new VPN connection and reauthenticate. A sustained attack could prevent new SSL VPN connections from being established. Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention. | |
Title | Cisco Meraki MX and Z3 Teleworker Gateway AnyConnect VPN Denial of Service Vulnerability | |
Weaknesses | CWE-415 | |
References |
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Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2024-10-02T18:23:11.523Z
Updated: 2024-10-02T19:08:07.164Z
Reserved: 2023-11-08T15:08:07.686Z
Link: CVE-2024-20498
Vulnrichment
Updated: 2024-10-02T19:07:59.760Z
NVD
Status : Awaiting Analysis
Published: 2024-10-02T19:15:13.870
Modified: 2024-10-04T13:50:43.727
Link: CVE-2024-20498
Redhat
No data.