SB2024100415 - Denial of service in Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices
Published: October 4, 2024
Security Bulletin ID
SB2024100415
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2024-20509)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a race condition during the VPN authentication process. A remote attacker can correctly guess an authentication handler and then send specially crafted HTTPS requests to cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.