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Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability

cisco-sa-fxos-nxos-cfs-dos-dAmnymbd · High · Published · Updated

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory.  The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result in a DoS condition.  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-nxos-cfs-dos-dAmnymbd This advisory is part of the August 2020 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication, which includes seven Cisco Security Advisories that describe seven vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: August 2020 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication.

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2020-3517
Cisco Bug IDsCSCvt46839, CSCvt46838, CSCvt46877, CSCvt39630, CSCvt46837, CSCvt46835
CVSS ScoreBase 8.6
Base 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco Unified Computing System (Managed), Cisco Firepower Extensible Operating System (FXOS), Cisco NX-OS Software 6.0(2)A8(1), Cisco NX-OS Software 6.0(2)A8(2), Cisco NX-OS Software 6.0(2)A8(3), Cisco NX-OS Software 6.0(2)A8(4), Cisco NX-OS Software 6.0(2)A8(4a), Cisco NX-OS Software 6.0(2)A8(5), Cisco NX-OS Software 6.0(2)A8(6), Cisco NX-OS Software 6.0(2)A8(7), Cisco NX-OS Software 6.0(2)A8(7a), Cisco NX-OS Software 6.0(2)A8(7b), Cisco NX-OS Software 6.0(2)A8(8), Cisco NX-OS Software 6.0(2)A8(9), Cisco NX-OS Software 6.0(2)A8(10a), Cisco NX-OS Software 6.0(2)A8(10), Cisco NX-OS Software 6.0(2)A8(11), Cisco NX-OS Software 6.0(2)A8(11a), Cisco NX-OS Software 6.0(2)A8(11b), Cisco NX-OS Software 7.0(3)F3(1), Cisco NX-OS Software 7.0(3)F3(2), Cisco NX-OS Software 7.0(3)F3(3), Cisco NX-OS Software 7.0(3)F3(3a), Cisco NX-OS Software 7.0(3)F3(4), Cisco NX-OS Software 7.0(3)F3(3c), Cisco NX-OS Software 7.0(3)F3(5), Cisco NX-OS Software 7.0(3)I4(1), Cisco NX-OS Software 7.0(3)I4(2), Cisco NX-OS Software 7.0(3)I4(3), Cisco NX-OS Software 7.0(3)I4(4), Cisco NX-OS Software 7.0(3)I4(5), Cisco NX-OS Software 7.0(3)I4(6), Cisco NX-OS Software 7.0(3)I4(7), Cisco NX-OS Software 7.0(3)I4(8), Cisco NX-OS Software 7.0(3)I4(8a), Cisco NX-OS Software 7.0(3)I4(8b), Cisco NX-OS Software 7.0(3)I4(8z), Cisco NX-OS Software 7.0(3)I4(1t), Cisco NX-OS Software 7.0(3)I4(6t), Cisco NX-OS Software 7.0(3)I4(9), Cisco NX-OS Software 7.0(3)I5(1), Cisco NX-OS Software 7.0(3)I5(2), Cisco NX-OS Software 7.0(3)I5(3), Cisco NX-OS Software 7.0(3)I5(3a), Cisco NX-OS Software 7.0(3)I5(3b), Cisco NX-OS Software 7.0(3)I6(1), Cisco NX-OS Software 7.0(3)I6(2), Cisco NX-OS Software 7.0(3)I7(1), Cisco NX-OS Software 7.0(3)I7(2), Cisco NX-OS Software 7.0(3)I7(3), Cisco NX-OS Software 7.0(3)I7(4), Cisco NX-OS Software 7.0(3)I7(5), Cisco NX-OS Software 7.0(3)I7(5a), Cisco NX-OS Software 7.0(3)I7(3z), Cisco NX-OS Software 7.0(3)I7(6), Cisco NX-OS Software 7.0(3)I7(6z), Cisco NX-OS Software 7.0(3)I7(7), Cisco NX-OS Software 7.0(3)I7(8), Cisco NX-OS Software 7.3(0)D1(1), Cisco NX-OS Software 7.3(0)DX(1), Cisco NX-OS Software 7.3(0)DY(1), Cisco NX-OS Software 7.3(0)N1(1), Cisco NX-OS Software 7.3(0)N1(1b), Cisco NX-OS Software 7.3(0)N1(1a), Cisco NX-OS Software 7.3(1)D1(1), Cisco NX-OS Software 7.3(1)DY(1), Cisco NX-OS Software 7.3(1)N1(1), Cisco NX-OS Software 7.3(2)D1(1), Cisco NX-OS Software 7.3(2)D1(2), Cisco NX-OS Software 7.3(2)D1(3), Cisco NX-OS Software 7.3(2)D1(3a), Cisco NX-OS Software 7.3(2)D1(1d), Cisco NX-OS Software 7.3(2)N1(1), Cisco NX-OS Software 7.3(2)N1(1b), Cisco NX-OS Software 7.3(2)N1(1c), Cisco NX-OS Software 7.3(3)N1(1), Cisco NX-OS Software 8.1(1), Cisco NX-OS Software 8.1(2), Cisco NX-OS Software 8.1(2a), Cisco NX-OS Software 8.1(1a), Cisco NX-OS Software 8.1(1b), Cisco NX-OS Software 8.2(1), Cisco NX-OS Software 8.2(2), Cisco NX-OS Software 8.2(3), Cisco NX-OS Software 8.2(4), Cisco NX-OS Software 8.2(5), Cisco NX-OS Software 8.3(1), Cisco NX-OS Software 8.3(2), Cisco NX-OS Software 9.2(1), Cisco NX-OS Software 9.2(2), Cisco NX-OS Software 9.2(2t), Cisco NX-OS Software 9.2(3), Cisco NX-OS Software 9.2(3y), Cisco NX-OS Software 9.2(4), Cisco NX-OS Software 9.2(2v), Cisco NX-OS Software 7.3(4)N1(1), Cisco NX-OS Software 7.3(4)N1(1a), Cisco NX-OS Software 7.3(3)D1(1), Cisco NX-OS Software 7.0(3)IA7(1), Cisco NX-OS Software 7.0(3)IA7(2), Cisco NX-OS Software 7.0(3)IM7(2), Cisco NX-OS Software 7.3(4)D1(1), Cisco NX-OS Software 7.3(5)N1(1), Cisco NX-OS Software 8.4(1), Cisco NX-OS Software 8.4(1a), Cisco NX-OS Software 9.3(1), Cisco NX-OS Software 9.3(2), Cisco NX-OS Software 9.3(3), Cisco NX-OS Software 9.3(1z), Cisco NX-OS Software 7.3(6)N1(1), Cisco NX-OS Software 7.3(6)N1(1a), Cisco NX-OS Software 7.3(5)D1(1), Cisco NX-OS Software 7.3(7)N1(1), Cisco NX-OS Software 7.3(7)N1(1a), Cisco NX-OS Software 7.3(7)N1(1b), Cisco NX-OS Software, Cisco MDS 9000 Multilayer Directors and Fabric Switches, Cisco Nexus 7000 Series Switches, Cisco Nexus 5000 Series Switches, Cisco Nexus 3000 Series Switches, Cisco Nexus 6000 Series Switches, Cisco Nexus 9000 Series Switches

Related Products

Product CVE Evidence
Firepower Extensible Operating System CVE-2020-3517 Cisco OpenVuln
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