Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2021-1387

Disclosure Date: February 24, 2021 •
CVE-2021-1387 CVSS v3 Base Score: 8.6
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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 an affected device. This vulnerability exists because the software improperly releases resources when it processes certain IPv6 packets that are destined to an affected device. An attacker could exploit this vulnerability by sending multiple crafted IPv6 packets to an affected device. A successful exploit could cause the network stack to run out of available buffers, impairing operations of control plane and management plane protocols and resulting in a DoS condition. Manual intervention would be required to restore normal operations on the affected device. For more information about the impact of this vulnerability, see the Details section of this advisory.

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CVSS V3 Severity and Metrics
Base Score:
8.6 High
Impact Score:
4
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Cisco NX-OS Software n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • cisco

Products

  • nx-os 6.0(2)a3(1),
  • nx-os 6.0(2)a3(2),
  • nx-os 6.0(2)a3(4),
  • nx-os 6.0(2)a4(1),
  • nx-os 6.0(2)a4(2),
  • nx-os 6.0(2)a4(3),
  • nx-os 6.0(2)a4(4),
  • nx-os 6.0(2)a4(5),
  • nx-os 6.0(2)a4(6),
  • nx-os 6.0(2)a6(1),
  • nx-os 6.0(2)a6(1a),
  • nx-os 6.0(2)a6(2),
  • nx-os 6.0(2)a6(2a),
  • nx-os 6.0(2)a6(3),
  • nx-os 6.0(2)a6(3a),
  • nx-os 6.0(2)a6(4),
  • nx-os 6.0(2)a6(4a),
  • nx-os 6.0(2)a6(5),
  • nx-os 6.0(2)a6(5a),
  • nx-os 6.0(2)a6(5b),
  • nx-os 6.0(2)a6(6),
  • nx-os 6.0(2)a6(7),
  • nx-os 6.0(2)a6(8),
  • nx-os 6.0(2)a7(1),
  • nx-os 6.0(2)a7(1a),
  • nx-os 6.0(2)a7(2),
  • nx-os 6.0(2)a7(2a),
  • nx-os 6.0(2)a8(1),
  • nx-os 6.0(2)a8(10),
  • nx-os 6.0(2)a8(10a),
  • nx-os 6.0(2)a8(11),
  • nx-os 6.0(2)a8(11a),
  • nx-os 6.0(2)a8(11b),
  • nx-os 6.0(2)a8(2),
  • nx-os 6.0(2)a8(3),
  • nx-os 6.0(2)a8(4),
  • nx-os 6.0(2)a8(4a),
  • nx-os 6.0(2)a8(5),
  • nx-os 6.0(2)a8(6),
  • nx-os 6.0(2)a8(7),
  • nx-os 6.0(2)a8(7a),
  • nx-os 6.0(2)a8(7b),
  • nx-os 6.0(2)a8(8),
  • nx-os 6.0(2)a8(9),
  • nx-os 6.0(2)u2(1),
  • nx-os 6.0(2)u2(2),
  • nx-os 6.0(2)u2(3),
  • nx-os 6.0(2)u2(4),
  • nx-os 6.0(2)u2(5),
  • nx-os 6.0(2)u2(6),
  • nx-os 6.0(2)u3(1),
  • nx-os 6.0(2)u3(2),
  • nx-os 6.0(2)u3(3),
  • nx-os 6.0(2)u3(4),
  • nx-os 6.0(2)u3(5),
  • nx-os 6.0(2)u3(6),
  • nx-os 6.0(2)u3(7),
  • nx-os 6.0(2)u3(8),
  • nx-os 6.0(2)u3(9),
  • nx-os 6.0(2)u4(1),
  • nx-os 6.0(2)u4(2),
  • nx-os 6.0(2)u4(3),
  • nx-os 6.0(2)u4(4),
  • nx-os 6.0(2)u5(1),
  • nx-os 6.0(2)u5(2),
  • nx-os 6.0(2)u5(3),
  • nx-os 6.0(2)u5(4),
  • nx-os 6.0(2)u6(1),
  • nx-os 6.0(2)u6(10),
  • nx-os 6.0(2)u6(10a),
  • nx-os 6.0(2)u6(1a),
  • nx-os 6.0(2)u6(2),
  • nx-os 6.0(2)u6(2a),
  • nx-os 6.0(2)u6(3),
  • nx-os 6.0(2)u6(3a),
  • nx-os 6.0(2)u6(4),
  • nx-os 6.0(2)u6(4a),
  • nx-os 6.0(2)u6(5),
  • nx-os 6.0(2)u6(5a),
  • nx-os 6.0(2)u6(5b),
  • nx-os 6.0(2)u6(5c),
  • nx-os 6.0(2)u6(6),
  • nx-os 6.0(2)u6(7),
  • nx-os 6.0(2)u6(8),
  • nx-os 6.0(2)u6(9),
  • nx-os 7.0(0)n1(1),
  • nx-os 7.0(1)n1(1),
  • nx-os 7.0(2)n1(1),
  • nx-os 7.0(3)f1(1),
  • nx-os 7.0(3)f2(1),
  • nx-os 7.0(3)f2(2),
  • nx-os 7.0(3)f3(1),
  • nx-os 7.0(3)f3(2),
  • nx-os 7.0(3)f3(3),
  • nx-os 7.0(3)f3(3a),
  • nx-os 7.0(3)f3(3c),
  • nx-os 7.0(3)f3(4),
  • nx-os 7.0(3)f3(5),
  • nx-os 7.0(3)i2(1),
  • nx-os 7.0(3)i2(1a),
  • nx-os 7.0(3)i2(2),
  • nx-os 7.0(3)i2(2a),
  • nx-os 7.0(3)i2(2b),
  • nx-os 7.0(3)i2(2c),
  • nx-os 7.0(3)i2(2d),
  • nx-os 7.0(3)i2(2e),
  • nx-os 7.0(3)i2(2r),
  • nx-os 7.0(3)i2(2s),
  • nx-os 7.0(3)i2(2v),
  • nx-os 7.0(3)i2(2w),
  • nx-os 7.0(3)i2(2x),
  • nx-os 7.0(3)i2(2y),
  • nx-os 7.0(3)i2(3),
  • nx-os 7.0(3)i2(4),
  • nx-os 7.0(3)i2(5),
  • nx-os 7.0(3)i3(1),
  • nx-os 7.0(3)i4(1),
  • nx-os 7.0(3)i4(1t),
  • nx-os 7.0(3)i4(2),
  • nx-os 7.0(3)i4(3),
  • nx-os 7.0(3)i4(4),
  • nx-os 7.0(3)i4(5),
  • nx-os 7.0(3)i4(6),
  • nx-os 7.0(3)i4(6t),
  • nx-os 7.0(3)i4(7),
  • nx-os 7.0(3)i4(8),
  • nx-os 7.0(3)i4(8a),
  • nx-os 7.0(3)i4(8b),
  • nx-os 7.0(3)i4(8z),
  • nx-os 7.0(3)i4(9),
  • nx-os 7.0(3)i5(1),
  • nx-os 7.0(3)i5(2),
  • nx-os 7.0(3)i5(3),
  • nx-os 7.0(3)i5(3a),
  • nx-os 7.0(3)i5(3b),
  • nx-os 7.0(3)i6(1),
  • nx-os 7.0(3)i6(2),
  • nx-os 7.0(3)i7(1),
  • nx-os 7.0(3)i7(2),
  • nx-os 7.0(3)i7(3),
  • nx-os 7.0(3)i7(3z),
  • nx-os 7.0(3)i7(4),
  • nx-os 7.0(3)i7(5),
  • nx-os 7.0(3)i7(5a),
  • nx-os 7.0(3)i7(6),
  • nx-os 7.0(3)i7(6z),
  • nx-os 7.0(3)i7(7),
  • nx-os 7.0(3)i7(8),
  • nx-os 7.0(3)ia7(1),
  • nx-os 7.0(3)ia7(2),
  • nx-os 7.0(3)ic4(4),
  • nx-os 7.0(3)im3(1),
  • nx-os 7.0(3)im3(2),
  • nx-os 7.0(3)im3(2a),
  • nx-os 7.0(3)im3(2b),
  • nx-os 7.0(3)im3(3),
  • nx-os 7.0(3)im7(2),
  • nx-os 7.0(3)n1(1),
  • nx-os 7.0(4)n1(1),
  • nx-os 7.0(4)n1(1a),
  • nx-os 7.0(5)n1(1),
  • nx-os 7.0(5)n1(1a),
  • nx-os 7.0(6)n1(1),
  • nx-os 7.0(6)n1(2s),
  • nx-os 7.0(6)n1(3s),
  • nx-os 7.0(6)n1(4s),
  • nx-os 7.0(7)n1(1),
  • nx-os 7.0(7)n1(1a),
  • nx-os 7.0(7)n1(1b),
  • nx-os 7.0(8)n1(1),
  • nx-os 7.0(8)n1(1a),
  • nx-os 7.1(0)n1(1),
  • nx-os 7.1(0)n1(1a),
  • nx-os 7.1(0)n1(1b),
  • nx-os 7.1(1)n1(1),
  • nx-os 7.1(1)n1(1a),
  • nx-os 7.1(2)n1(1),
  • nx-os 7.1(2)n1(1a),
  • nx-os 7.1(3)n1(1),
  • nx-os 7.1(3)n1(2),
  • nx-os 7.1(3)n1(2a),
  • nx-os 7.1(3)n1(3),
  • nx-os 7.1(3)n1(4),
  • nx-os 7.1(3)n1(5),
  • nx-os 7.1(4)n1(1),
  • nx-os 7.1(4)n1(1a),
  • nx-os 7.1(4)n1(1c),
  • nx-os 7.1(4)n1(1d),
  • nx-os 7.1(5)n1(1),
  • nx-os 7.1(5)n1(1b),
  • nx-os 7.2(0)d1(1),
  • nx-os 7.2(0)n1(1),
  • nx-os 7.2(1)d1(1),
  • nx-os 7.2(1)n1(1),
  • nx-os 7.2(2)d1(1),
  • nx-os 7.2(2)d1(2),
  • nx-os 7.2(2)d1(3),
  • nx-os 7.2(2)d1(4),
  • nx-os 7.3(0)d1(1),
  • nx-os 7.3(0)dx(1),
  • nx-os 7.3(0)n1(1),
  • nx-os 7.3(0)n1(1a),
  • nx-os 7.3(0)n1(1b),
  • nx-os 7.3(1)d1(1),
  • nx-os 7.3(1)n1(1),
  • nx-os 7.3(2)d1(1),
  • nx-os 7.3(2)d1(1d),
  • nx-os 7.3(2)d1(2),
  • nx-os 7.3(2)d1(3),
  • nx-os 7.3(2)d1(3a),
  • nx-os 7.3(2)n1(1),
  • nx-os 7.3(2)n1(1b),
  • nx-os 7.3(2)n1(1c),
  • nx-os 7.3(3)d1(1),
  • nx-os 7.3(3)n1(1),
  • nx-os 7.3(4)d1(1),
  • nx-os 7.3(4)n1(1),
  • nx-os 7.3(4)n1(1a),
  • nx-os 7.3(5)d1(1),
  • nx-os 7.3(5)n1(1),
  • nx-os 7.3(6)d1(1),
  • nx-os 7.3(6)n1(1),
  • nx-os 7.3(6)n1(1a),
  • nx-os 7.3(7)n1(1),
  • nx-os 7.3(7)n1(1a),
  • nx-os 7.3(7)n1(1b),
  • nx-os 8.0(1),
  • nx-os 8.1(1),
  • nx-os 8.1(2),
  • nx-os 8.1(2a),
  • nx-os 8.2(1),
  • nx-os 8.2(2),
  • nx-os 8.2(3),
  • nx-os 8.2(4),
  • nx-os 8.2(5),
  • nx-os 8.3(1),
  • nx-os 8.3(2),
  • nx-os 8.4(1),
  • nx-os 8.4(2),
  • unified computing system

Additional Info

Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Technical Analysis