A vulnerability 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.
This vulnerability is due to insufficient resource management when establishing TLS/SSL sessions. An attacker could exploit this vulnerability by sending a series of crafted TLS/SSL messages to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to stop accepting new connections, preventing new SSL VPN connections from being established. Existing SSL VPN sessions are not impacted.
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 | A vulnerability 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. This vulnerability is due to insufficient resource management when establishing TLS/SSL sessions. An attacker could exploit this vulnerability by sending a series of crafted TLS/SSL messages to the VPN server of an affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to stop accepting new connections, preventing new SSL VPN connections from being established. Existing SSL VPN sessions are not impacted. 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-400 | |
References |
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Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2024-10-02T18:23:19.259Z
Updated: 2024-10-02T19:05:52.477Z
Reserved: 2023-11-08T15:08:07.687Z
Link: CVE-2024-20500
Vulnrichment
Updated: 2024-10-02T19:05:47.268Z
NVD
Status : Awaiting Analysis
Published: 2024-10-02T19:15:14.350
Modified: 2024-10-04T13:50:43.727
Link: CVE-2024-20500
Redhat
No data.