Vulnerability Description
A vulnerability in the ingress packet processing function of Cisco IOS Software for Cisco Catalyst 4000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when processing TCP packets directed to the device on specific Cisco Catalyst 4000 Series Switches. An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device. A successful exploit could cause the affected device to run out of buffer resources, impairing operations of control plane and management plane protocols, resulting in a DoS condition. This vulnerability can be triggered only by traffic that is destined to an affected device and cannot be exploited using traffic that transits an affected device.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | 15.2\(3\)e1 |
| Cisco | Catalyst 4500 Supervisor Engine 6-E | - |
| Cisco | Catalyst 4500 Supervisor Engine 6L-E | - |
| Cisco | Catalyst 4900M | - |
| Cisco | Catalyst 4948E | - |
| Cisco | Catalyst 4948E-F | - |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2019-12652?
CVE-2019-12652 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability in the ingress packet processing function of Cisco IOS Software for Cisco Catalyst 4000 Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (Do...
How severe is CVE-2019-12652?
CVE-2019-12652 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-12652?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios, Cisco Catalyst 4500 Supervisor Engine 6-E, Cisco Catalyst 4500 Supervisor Engine 6L-E, Cisco Catalyst 4900M, Cisco Catalyst 4948E.