Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2019-1968

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
30/08/2019
Last modified:
16/10/2020

Description

A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an NX-API system process to unexpectedly restart. The vulnerability is due to incorrect validation of the HTTP header of a request that is sent to the NX-API. An attacker could exploit this vulnerability by sending a crafted HTTP request to the NX-API on an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition in the NX-API service; however, the NX-OS device itself would still be available and passing network traffic. Note: The NX-API feature is disabled by default.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:7.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:8.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:8.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:8.3:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9140:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9200:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9700:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:6.1\(2\)i2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:6.1\(2\)i3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:7.0\(3\)i4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:7.0\(3\)i7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:9.2:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools