Vulnerability in Cisco Catalyst 4500 Supervisor Engine 6-E
CVE-2019-12652
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Cisco Catalyst 4500 Supervisor Engine 6-E
- Cisco Catalyst 4500 Supervisor Engine 6l-E
- Cisco Catalyst 4900m
- Cisco Catalyst 4948e
- Cisco Catalyst 4948e-F
- Cisco iOS 15.0(1)xo1 — versions unspecified
- Cisco iOS — versions 15.2\(4\)e3, 15.2(3)e1, 15.2\(3\)e1
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-12652?
- CVE-2019-12652 is a high-severity vulnerability in Cisco Catalyst 4500 Supervisor Engine 6-E, classified under CWE-399. CVSS score: 7.5/10. Published 2019-09-25.
- How severe is CVE-2019-12652?
- High severity. CVSS v3 base score is 7.5 out of 10.