Vulnerability Monitor

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CVE-2019-1599

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).

Published

2019-03-07T20:29:00.297

Last Modified

2024-11-21T04:36:53.637

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-399
  • Type: Primary
    CWE-770
Affected Vendors & Products
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
References