A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to an issue with allocating and freeing memory buffers in the network stack. An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device in a sustained way. A successful exploit could cause the network stack of an affected device to run out of available buffers, impairing operations of control plane and management plane protocols, resulting in a DoS condition. Note: 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. Nexus 1000V Switch for Microsoft Hyper-V is affected in versions prior to 5.2(1)SM3(2.1). Nexus 1000V Switch for VMware vSphere is affected in versions prior to 5.2(1)SV3(4.1a). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(6) and 9.2(2). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(11), 7.0(3)I7(6), and 9.2(2). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5) and 9.2(2). Nexus 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(5)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22. Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5) and 9.2(2). UCS 6200 and 6300 Series Fabric Interconnect are affected in versions prior to 3.2(3j) and 4.0(2a). UCS 6400 Series Fabric Interconnect are affected in versions prior to 4.0(2a).
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 15 products from cisco, from cisco, from cisco and 12 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-03-07T20:29:00.297
2024-11-21T04:36:53.637
Modified
CVSSv3.1: 8.6 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | nx-os | < 9.2\(2\) | Yes |
| Hardware | cisco | nexus_3000 | - | No |
| Hardware | cisco | nexus_3500 | - | No |
| Hardware | cisco | nexus_3600 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)i7\(5\) | Yes |
| Hardware | cisco | nexus_3500 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)f3\(5\) | Yes |
| Hardware | cisco | nexus_3600 | - | No |
| Operating System | cisco | nx-os | < 7.3\(5\)n1\(1\) | Yes |
| Hardware | cisco | nexus_5500 | - | No |
| Hardware | cisco | nexus_5600 | - | No |
| Hardware | cisco | nexus_6000 | - | No |
| Operating System | cisco | nx-os | < 8.3\(2\) | Yes |
| Hardware | cisco | nexus_7000 | - | No |
| Hardware | cisco | nexus_7700 | - | No |
| Operating System | cisco | nx-os | < 9.2\(2\) | Yes |
| Hardware | cisco | nexus_9000 | - | No |
| Hardware | cisco | nexus_9500 | - | No |
| Operating System | cisco | nx-os | < 6.0\(2\)a8\(11\) | Yes |
| Hardware | cisco | nexus_3500 | - | No |
| Operating System | cisco | nx-os | < 6.2\(22\) | Yes |
| Hardware | cisco | nexus_7000 | - | No |
| Hardware | cisco | nexus_7700 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)i7\(6\) | Yes |
| Hardware | cisco | nexus_3000 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)f3\(5\) | Yes |
| Hardware | cisco | nexus_9500 | - | No |
| Operating System | cisco | nx-os | < 5.2\(1\)sm3\(2.1\) | Yes |
| Hardware | cisco | nexus_1000v | - | No |
| Operating System | cisco | nx-os | < 5.2\(1\)sv3\(4.1a\) | Yes |
| Hardware | cisco | nexus_1000v | - | No |
| Operating System | cisco | nx-os | < 4.0\(2a\) | Yes |
| Hardware | cisco | ucs_6200 | - | No |
| Hardware | cisco | ucs_6300 | - | No |
| Operating System | cisco | nx-os | < 4.0\(2a\) | Yes |
| Hardware | cisco | ucs_6400 | - | No |
| Operating System | cisco | nx-os | < 3.2\(3j\) | Yes |
| Hardware | cisco | ucs_6200 | - | No |
| Hardware | cisco | ucs_6300 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)i4\(9\) | Yes |
| Hardware | cisco | nexus_3000 | - | No |
| Operating System | cisco | nx-os | < 7.1\(5\)n1\(1b\) | Yes |
| Hardware | cisco | nexus_5500 | - | No |
| Hardware | cisco | nexus_5600 | - | No |
| Hardware | cisco | nexus_6000 | - | No |
| Operating System | cisco | nx-os | < 8.2\(3\) | Yes |
| Hardware | cisco | nexus_7000 | - | No |
| Hardware | cisco | nexus_7700 | - | No |
| Operating System | cisco | nx-os | < 7.3\(3\)d1\(1\) | Yes |
| Hardware | cisco | nexus_7000 | - | No |
| Hardware | cisco | nexus_7700 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)i7\(6\) | Yes |
| Hardware | cisco | nexus_9000 | - | No |
| Operating System | cisco | nx-os | < 7.0\(3\)i4\(9\) | Yes |
| Hardware | cisco | nexus_9000 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.