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

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CVE-2020-3170

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
26/02/2020
Last modified:
03/03/2020

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 Cisco 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:L CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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): Low

Base Score 3.x
5.30
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

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

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 8.4\(1\) (excluding)
cpe:2.3:h:cisco:mds_9132t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9148s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9148t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9216:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9216a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9216i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9222i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9506:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9509:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9513:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9706:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9710:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9718:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 8.2\(5\) (excluding)

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


References to Advisories, Solutions, and Tools