CVE-2023-20125: Cisco BroadWorks Network Server TCP Denial of Service Vulnerability
Description
A vulnerability in the local interface of Cisco BroadWorks Network Server could allow an unauthenticated, remote attacker to exhaust system resources, causing a denial of service (DoS) condition.
This vulnerability exists because rate limiting does not occur for certain incoming TCP connections. An attacker could exploit this vulnerability by sending a high rate of TCP connections to the server. A successful exploit could allow the attacker to cause TCP connection resources to grow rapidly until the Cisco BroadWorks Network Server becomes unusable.
Note: To recover from this vulnerability, either Cisco BroadWorks Network Server software must be restarted or the Cisco BroadWorks Network Server node must be rebooted. For more information, see the section of this advisory.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Classification
CVE ID: CVE-2023-20125
CVSS Base Severity: HIGH
CVSS Base Score: 8.6
Affected Products
Vendor: Cisco
Product: Cisco BroadWorks
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 19.3% (scored less or equal to compared to others)
EPSS Date: 2025-02-03 (when was this score calculated)