CVE-2024-20501
Oct. 8, 2024, 6:28 p.m.
7.5
High
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.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Cisco |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| o | cisco | meraki_mx65_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx65 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx64_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx64 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_z4c_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_z4c | - | / | / | / | / | / | / | / |
| o | cisco | meraki_z4_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_z4 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_z3c_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_z3c | - | / | / | / | / | / | / | / |
| o | cisco | meraki_z3_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_z3 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_vmx_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_vmx | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx600_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx600 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx450_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx450 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx400_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx400 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx250_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx250 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx105_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx105 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx100_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx100 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx95_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx95 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx85_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx85 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx84_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx84 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx75_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx75 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx68w_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx68w | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx68cw_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx68cw | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx68_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx68 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx67w_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx67w | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx67c_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx67c | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx67_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx67 | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx65w_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx65w | - | / | / | / | / | / | / | / |
| o | cisco | meraki_mx64w_firmware | / | / | / | / | / | / | / | / |
| h | cisco | meraki_mx64w | - | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
- Confidentiality Impact: NONE
- Integrity Impact: NONE
- Availability Impact: HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Timeline
Published: Oct. 2, 2024, 7:15 p.m.
Last Modified: Oct. 8, 2024, 6:28 p.m.
Last Modified: Oct. 8, 2024, 6:28 p.m.
Status : Analyzed
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
ykramarz@cisco.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.