CVE-2019-1599

Summary

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).

Affected Software

VendorProductVersion RangeStatus
CiscoNexus 1000V Switch for Microsoft Hyper-Vunspecified < 5.2(1)SM3(2.1)affected
CiscoNexus 1000V Switch for VMware vSphereunspecified < 5.2(1)SV3(4.1a)affected
CiscoNexus 3000 Series Switchesunspecified < 7.0(3)I7(6)affected
CiscoNexus 3000 Series Switchesunspecified < 9.2(2)affected
CiscoNexus 3500 Platform Switchesunspecified < 6.0(2)A8(11)affected
CiscoNexus 3500 Platform Switchesunspecified < 7.0(3)I7(6)affected
CiscoNexus 3500 Platform Switchesunspecified < 9.2(2)affected
CiscoNexus 3600 Platform Switchesunspecified < 7.0(3)F3(5)affected
CiscoNexus 3600 Platform Switchesunspecified < 9.2(2)affected
CiscoNexus 5500, 5600, and 6000 Series Switchesunspecified < 7.1(5)N1(1b)affected
CiscoNexus 5500, 5600, and 6000 Series Switchesunspecified < 7.3(5)N1(1)affected
CiscoNexus 7000 and 7700 Series Switchesunspecified < 6.2(22)affected
CiscoNexus 7000 and 7700 Series Switchesunspecified < 7.3(3)D1(1)affected
CiscoNexus 7000 and 7700 Series Switchesunspecified < 8.2(3)affected
CiscoNexus 7000 and 7700 Series Switchesunspecified < 8.3(2)affected
CiscoNexus 9000 Series Switches in Standalone NX-OS Modeunspecified < 7.0(3)I7(6)affected
CiscoNexus 9000 Series Switches in Standalone NX-OS Modeunspecified < 9.2(2)affected
CiscoNexus 9500 R-Series Line Cards and Fabric Modulesunspecified < 7.0(3)F3(5)affected
CiscoNexus 9500 R-Series Line Cards and Fabric Modulesunspecified < 9.2(2)affected
CiscoUCS 6200 and 6300 Series Fabric Interconnectunspecified < 3.2(3j)affected
CiscoUCS 6200 and 6300 Series Fabric Interconnectunspecified < 4.0(2a)affected
CiscoUCS 6400 Series Fabric Interconnectunspecified < 4.0(2a)affected

Weaknesses

  • CWE-399: CWE-399

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References